2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [AS_HELP_STRING([--with-local-prefix=DIR],
109 [specifies directory to put local include])],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
128 [specifies directory to put g++ header files])],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 libstdcxx_incdir='include/c++/$(version)'
141 if test x$host != x$target; then
142 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
144 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
148 AC_ARG_WITH(cpp_install_dir,
149 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
150 [install the user visible C preprocessor in DIR
151 (relative to PREFIX) as well as PREFIX/bin])],
152 [if test x$withval = xyes; then
153 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
154 elif test x$withval != xno; then
155 cpp_install_dir=$withval
158 # We would like to our source tree to be readonly. However when releases or
159 # pre-releases are generated, the flex/bison generated files as well as the
160 # various formats of manuals need to be included along with the rest of the
161 # sources. Therefore we have --enable-generated-files-in-srcdir to do
164 AC_MSG_CHECKING([whether to place generated files in the source directory])
165 dnl generated-files-in-srcdir is disabled by default
166 AC_ARG_ENABLE(generated-files-in-srcdir,
167 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
168 [put copies of generated files in source dir
169 intended for creating source tarballs for users
170 without texinfo bison or flex])],
171 generated_files_in_srcdir=$enableval,
172 generated_files_in_srcdir=no)
174 AC_MSG_RESULT($generated_files_in_srcdir)
176 if test "$generated_files_in_srcdir" = "yes"; then
183 # -------------------
184 # Find default linker
185 # -------------------
189 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
190 gnu_ld_flag="$with_gnu_ld",
193 # With pre-defined ld
195 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
196 DEFAULT_LINKER="$with_ld")
197 if test x"${DEFAULT_LINKER+set}" = x"set"; then
198 if test ! -x "$DEFAULT_LINKER"; then
199 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
200 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
203 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
204 [Define to enable the use of a default linker.])
207 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
208 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
210 AC_MSG_CHECKING([whether a default linker was specified])
211 if test x"${DEFAULT_LINKER+set}" = x"set"; then
212 if test x"$gnu_ld_flag" = x"no"; then
213 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
215 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
221 # With demangler in GNU ld
222 AC_ARG_WITH(demangler-in-ld,
223 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
224 demangler_in_ld="$with_demangler_in_ld",
227 # ----------------------
228 # Find default assembler
229 # ----------------------
233 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
234 gas_flag="$with_gnu_as",
238 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
239 DEFAULT_ASSEMBLER="$with_as")
240 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
241 if test ! -x "$DEFAULT_ASSEMBLER"; then
242 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
243 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
246 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
247 [Define to enable the use of a default assembler.])
250 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
251 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
253 AC_MSG_CHECKING([whether a default assembler was specified])
254 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
255 if test x"$gas_flag" = x"no"; then
256 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
258 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
268 # If a non-executable a.out is present (e.g. created by GNU as above even if
269 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
270 # file, even when creating an executable, so an execution test fails.
271 # Remove possible default executable files to avoid this.
273 # FIXME: This really belongs into AC_PROG_CC and can be removed once
274 # Autoconf includes it.
275 rm -f a.out a.exe b.out
277 # Find the native compiler
281 ACX_PROG_GNAT([-I"$srcdir"/ada])
283 # autoconf is lame and doesn't give us any substitution variable for this.
284 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
285 NO_MINUS_C_MINUS_O=yes
287 OUTPUT_OPTION='-o $@'
289 AC_SUBST(NO_MINUS_C_MINUS_O)
290 AC_SUBST(OUTPUT_OPTION)
292 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
293 # optimizations to be activated explicitly by the toplevel.
296 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
300 # Determine PICFLAG for target gnatlib.
301 GCC_PICFLAG_FOR_TARGET
302 AC_SUBST(PICFLAG_FOR_TARGET)
304 # -------------------------
305 # Check C compiler features
306 # -------------------------
308 AC_USE_SYSTEM_EXTENSIONS
314 # sizeof(char) is 1 by definition.
315 AC_CHECK_SIZEOF(void *)
316 AC_CHECK_SIZEOF(short)
318 AC_CHECK_SIZEOF(long)
319 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
320 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
323 # ---------------------
324 # Warnings and checking
325 # ---------------------
327 # Check $CC warning features (if it's GCC).
328 # We want to use -pedantic, but we don't want warnings about
332 # So, we only use -pedantic if we can disable those warnings.
334 ACX_PROG_CC_WARNING_OPTS(
335 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
336 ACX_PROG_CC_WARNING_OPTS(
337 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
339 ACX_PROG_CC_WARNING_OPTS(
340 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
341 ACX_PROG_CC_WARNING_OPTS(
342 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
343 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
344 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
345 [-Wno-overlength-strings])), [strict_warn])
346 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
348 # The above macros do nothing if the compiler is not GCC. However, the
349 # Makefile has more goo to add other flags, so these variables are used
350 # to enable warnings only for GCC.
353 if test "x$GCC" = "xyes"; then
354 warn_cflags='$(GCC_WARN_CFLAGS)'
355 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
357 AC_SUBST(warn_cflags)
358 AC_SUBST(warn_cxxflags)
360 # Enable expensive internal checks
362 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
366 AC_ARG_ENABLE(checking,
367 [AS_HELP_STRING([[--enable-checking[=LIST]]],
368 [enable expensive run-time checks. With LIST,
369 enable only specific categories of checks.
370 Categories are: yes,no,all,none,release.
371 Flags are: assert,df,fold,gc,gcac,gimple,misc,
372 rtlflag,rtl,runtime,tree,valgrind,types])],
373 [ac_checking_flags="${enableval}"],[
374 # Determine the default checks.
375 if test x$is_release = x ; then
376 ac_checking_flags=yes
378 ac_checking_flags=release
380 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
381 for check in release $ac_checking_flags
384 # these set all the flags to specific states
385 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
386 ac_fold_checking= ; ac_gc_checking=1 ;
387 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
388 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
389 ac_tree_checking=1 ; ac_valgrind_checking= ;
390 ac_types_checking=1 ;;
391 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
392 ac_fold_checking= ; ac_gc_checking= ;
393 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
394 ac_rtlflag_checking= ; ac_runtime_checking= ;
395 ac_tree_checking= ; ac_valgrind_checking= ;
396 ac_types_checking= ;;
397 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
398 ac_fold_checking=1 ; ac_gc_checking=1 ;
399 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
400 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
401 ac_tree_checking=1 ; ac_valgrind_checking= ;
402 ac_types_checking=1 ;;
403 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
404 ac_fold_checking= ; ac_gc_checking= ;
405 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
406 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
407 ac_tree_checking= ; ac_valgrind_checking= ;
408 ac_types_checking= ;;
409 # these enable particular checks
410 assert) ac_assert_checking=1 ;;
411 df) ac_df_checking=1 ;;
412 fold) ac_fold_checking=1 ;;
413 gc) ac_gc_checking=1 ;;
414 gcac) ac_gc_always_collect=1 ;;
415 gimple) ac_gimple_checking=1 ;;
416 misc) ac_checking=1 ;;
417 rtl) ac_rtl_checking=1 ;;
418 rtlflag) ac_rtlflag_checking=1 ;;
419 runtime) ac_runtime_checking=1 ;;
420 tree) ac_tree_checking=1 ;;
421 types) ac_types_checking=1 ;;
422 valgrind) ac_valgrind_checking=1 ;;
423 *) AC_MSG_ERROR(unknown check category $check) ;;
429 if test x$ac_checking != x ; then
430 AC_DEFINE(ENABLE_CHECKING, 1,
431 [Define if you want more run-time sanity checks. This one gets a grab
432 bag of miscellaneous but relatively cheap checks.])
433 nocommon_flag=-fno-common
435 AC_SUBST(nocommon_flag)
436 if test x$ac_df_checking != x ; then
437 AC_DEFINE(ENABLE_DF_CHECKING, 1,
438 [Define if you want more run-time sanity checks for dataflow.])
440 if test x$ac_assert_checking != x ; then
441 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
442 [Define if you want assertions enabled. This is a cheap check.])
444 if test x$ac_gimple_checking != x ; then
445 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
446 [Define if you want operations on GIMPLE (the basic data structure of
447 the high-level optimizers) to be checked for dynamic type safety at
448 runtime. This is moderately expensive.])
450 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
451 if test x$ac_runtime_checking != x ; then
452 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
453 [Define if you want runtime assertions enabled. This is a cheap check.])
455 if test x$ac_tree_checking != x ; then
456 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
457 [Define if you want all operations on trees (the basic data
458 structure of the front ends) to be checked for dynamic type safety
459 at runtime. This is moderately expensive. The tree browser debugging
460 routines will also be enabled by this option.
462 TREEBROWSER=tree-browser.o
464 if test x$ac_types_checking != x ; then
465 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
466 [Define if you want all gimple types to be verified after gimplifiation.
470 AC_SUBST(TREEBROWSER)
471 if test x$ac_rtl_checking != x ; then
472 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
473 [Define if you want all operations on RTL (the basic data structure
474 of the optimizer and back end) to be checked for dynamic type safety
475 at runtime. This is quite expensive.])
477 if test x$ac_rtlflag_checking != x ; then
478 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
479 [Define if you want RTL flag accesses to be checked against the RTL
480 codes that are supported for each access macro. This is relatively
483 if test x$ac_gc_checking != x ; then
484 AC_DEFINE(ENABLE_GC_CHECKING, 1,
485 [Define if you want the garbage collector to do object poisoning and
486 other memory allocation checks. This is quite expensive.])
488 if test x$ac_gc_always_collect != x ; then
489 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
490 [Define if you want the garbage collector to operate in maximally
491 paranoid mode, validating the entire heap and collecting garbage at
492 every opportunity. This is extremely expensive.])
494 if test x$ac_fold_checking != x ; then
495 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
496 [Define if you want fold checked that it never destructs its argument.
497 This is quite expensive.])
499 valgrind_path_defines=
502 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
503 dnl # an if statement. This was the source of very frustrating bugs
504 dnl # in converting to autoconf 2.5x!
505 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
507 if test x$ac_valgrind_checking != x ; then
508 # It is certainly possible that there's valgrind but no valgrind.h.
509 # GCC relies on making annotations so we must have both.
510 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
511 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
512 [[#include <valgrind/memcheck.h>
513 #ifndef VALGRIND_DISCARD
514 #error VALGRIND_DISCARD not defined
516 [gcc_cv_header_valgrind_memcheck_h=yes],
517 [gcc_cv_header_valgrind_memcheck_h=no])
518 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
519 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
520 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
521 [[#include <memcheck.h>
522 #ifndef VALGRIND_DISCARD
523 #error VALGRIND_DISCARD not defined
525 [gcc_cv_header_memcheck_h=yes],
526 [gcc_cv_header_memcheck_h=no])
527 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
528 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
529 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
530 if test "x$valgrind_path" = "x" \
531 || (test $have_valgrind_h = no \
532 && test $gcc_cv_header_memcheck_h = no \
533 && test $gcc_cv_header_valgrind_memcheck_h = no); then
534 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
536 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
537 valgrind_command="$valgrind_path -q"
538 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
539 [Define if you want to run subprograms and generated programs
540 through valgrind (a memory checker). This is extremely expensive.])
541 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
542 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
543 [Define if valgrind's valgrind/memcheck.h header is installed.])
545 if test $gcc_cv_header_memcheck_h = yes; then
546 AC_DEFINE(HAVE_MEMCHECK_H, 1,
547 [Define if valgrind's memcheck.h header is installed.])
550 AC_SUBST(valgrind_path_defines)
551 AC_SUBST(valgrind_command)
553 # Enable code coverage collection
554 AC_ARG_ENABLE(coverage,
555 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
556 [enable compiler's code coverage collection.
557 Use to measure compiler performance and locate
558 unused parts of the compiler. With LEVEL, specify
559 optimization. Values are opt, noopt,
561 [case "${enableval}" in
563 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
566 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
569 # a.k.a. --disable-coverage
573 AC_MSG_ERROR(unknown coverage setting $enableval)
577 AC_SUBST(coverage_flags)
579 AC_ARG_ENABLE(gather-detailed-mem-stats,
580 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
581 [enable detailed memory allocation stats gathering])], [],
582 [enable_gather_detailed_mem_stats=no])
583 if test x$enable_gather_detailed_mem_stats = xyes ; then
584 AC_DEFINE(GATHER_STATISTICS, 1,
585 [Define to enable detailed memory allocation stats gathering.])
588 # -------------------------------
589 # Miscenalleous configure options
590 # -------------------------------
592 # See if we are building gcc with C++.
593 AC_ARG_ENABLE(build-with-cxx,
594 [AS_HELP_STRING([--enable-build-with-cxx],
595 [build with C++ compiler instead of C compiler])],
596 ENABLE_BUILD_WITH_CXX=$enableval,
597 ENABLE_BUILD_WITH_CXX=no)
598 AC_SUBST(ENABLE_BUILD_WITH_CXX)
599 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
600 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
601 [Define if building with C++.])
606 [AS_HELP_STRING([--with-stabs],
607 [arrange to use stabs instead of host debug format])],
611 # Determine whether or not multilibs are enabled.
612 AC_ARG_ENABLE(multilib,
613 [AS_HELP_STRING([--enable-multilib],
614 [enable library support for multiple ABIs])],
615 [], [enable_multilib=yes])
616 AC_SUBST(enable_multilib)
618 # Enable __cxa_atexit for C++.
619 AC_ARG_ENABLE(__cxa_atexit,
620 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
623 # Enable C extension for decimal float if target supports it.
624 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
626 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
627 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
628 [Define to 1 to enable decimal float extension to C.])
630 # Use default_decimal_float for dependency.
631 enable_decimal_float=$default_decimal_float
633 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
634 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
635 [Define to 1 to specify that we are using the BID decimal floating
636 point format instead of DPD])
638 # Enable C extension for fixed-point arithmetic.
639 AC_ARG_ENABLE(fixed-point,
640 [AS_HELP_STRING([--enable-fixed-point],
641 [enable fixed-point arithmetic extension to C])],
646 enable_fixed_point=yes
652 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
653 enable_fixed_point=no
656 enable_fixed_point=yes
661 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
662 enable_fixed_point=no
666 AC_SUBST(enable_fixed_point)
668 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
669 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
670 [Define to 1 to enable fixed-point arithmetic extension to C.])
673 # Pass with no value to take the default
674 # Pass with a value to specify a thread package
675 AC_ARG_ENABLE(threads,
676 [AS_HELP_STRING([[--enable-threads[=LIB]]],
677 [enable thread usage for target GCC,
678 using LIB thread package])],,
682 [AS_HELP_STRING([--enable-tls],
683 [enable or disable generation of tls code
684 overriding the assembler check for tls support])],
688 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
689 Valid choices are 'yes' and 'no'.]) ;;
693 AC_ARG_ENABLE(objc-gc,
694 [AS_HELP_STRING([--enable-objc-gc],
695 [enable the use of Boehm's garbage collector with
696 the GNU Objective-C runtime])],
697 if test x$enable_objc_gc = xno; then
705 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
706 dwarf2="$with_dwarf2",
709 AC_ARG_ENABLE(shared,
710 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
712 case $enable_shared in
716 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
717 for pkg in $enableval; do
718 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
725 ], [enable_shared=yes])
726 AC_SUBST(enable_shared)
728 AC_ARG_WITH([native-system-header-dir],
729 [ --with-native-system-header-dir=dir
730 use dir as the directory to look for standard
731 system header files in. Defaults to /usr/include.],
733 case ${with_native_system_header_dir} in
734 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
735 /* | [[A-Za-z]]:[[\\/]]*) ;;
736 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
738 configured_native_system_header_dir="${withval}"
739 ], [configured_native_system_header_dir=])
741 AC_ARG_WITH(build-sysroot,
742 [AS_HELP_STRING([--with-build-sysroot=sysroot],
743 [use sysroot as the system root during the build])],
744 [if test x"$withval" != x ; then
745 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
747 [SYSROOT_CFLAGS_FOR_TARGET=])
748 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
751 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
752 [search for usr/lib, usr/include, et al, within DIR])],
754 case ${with_sysroot} in
755 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
756 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
759 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
760 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
762 if test "x$prefix" = xNONE; then
763 test_prefix=/usr/local
767 if test "x$exec_prefix" = xNONE; then
768 test_exec_prefix=$test_prefix
770 test_exec_prefix=$exec_prefix
772 case ${TARGET_SYSTEM_ROOT} in
773 "${test_prefix}"|"${test_prefix}/"*|\
774 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
775 '${prefix}'|'${prefix}/'*|\
776 '${exec_prefix}'|'${exec_prefix}/'*)
777 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
778 TARGET_SYSTEM_ROOT_DEFINE="$t"
783 TARGET_SYSTEM_ROOT_DEFINE=
784 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
786 AC_SUBST(TARGET_SYSTEM_ROOT)
787 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
788 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
791 [AS_HELP_STRING([--with-specs=SPECS],
792 [add SPECS to driver command-line processing])],
793 [CONFIGURE_SPECS=$withval],
796 AC_SUBST(CONFIGURE_SPECS)
798 ACX_PKGVERSION([GCC])
799 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
801 # Sanity check enable_languages in case someone does not run the toplevel
802 # configure # script.
803 AC_ARG_ENABLE(languages,
804 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
805 [case ,${enable_languages}, in
807 # go safe -- we cannot be much sure without the toplevel
809 # analysis of which target libs are present and usable
813 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
818 enable_languages=c,${enable_languages}
821 [enable_languages=c])
823 AC_ARG_WITH(multilib-list,
824 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
826 with_multilib_list=default)
828 # -------------------------
829 # Checks for other programs
830 # -------------------------
834 # Find some useful tools
836 # We need awk to create options.c and options.h.
837 # Bail out if it's missing.
839 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
847 # By default, the Darwin ranlib will not treat common symbols as
848 # definitions when building the archive table of contents. Other
849 # ranlibs do that; pass an option to the Darwin ranlib that makes
850 # it behave similarly.
856 AC_SUBST(ranlib_flags)
860 # See if cmp has --ignore-initial.
861 gcc_AC_PROG_CMP_IGNORE_INITIAL
863 # See if we have the mktemp command.
864 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
866 # See if makeinfo has been installed and is modern enough
867 # that we can use it.
868 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
869 [GNU texinfo.* \([0-9][0-9.]*\)],
870 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
871 if test $gcc_cv_prog_makeinfo_modern = no; then
873 *** Makeinfo is missing or too old.
874 *** Info documentation will not be built.])
881 # Is pod2man recent enough to regenerate manpages?
882 AC_MSG_CHECKING([for recent Pod::Man])
883 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
885 GENERATED_MANPAGES=generated-manpages
890 AC_SUBST(GENERATED_MANPAGES)
892 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
895 dnl Don't use AC_PROG_LEX; we insist on flex.
896 dnl LEXLIB is not useful in gcc.
897 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
900 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
902 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
903 # check for build == host before using them.
906 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
907 && test -d ../binutils ; then
908 NM='${objdir}/../binutils/nm-new'
910 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
914 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
915 && test -d ../binutils ; then
916 AR='${objdir}/../binutils/ar'
918 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
922 # --------------------
923 # Checks for C headers
924 # --------------------
926 # Need to reject headers which give warnings, so that the -Werror bootstrap
927 # works later. *sigh* This needs to come before all header checks.
934 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
935 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
936 sys/resource.h sys/param.h sys/times.h sys/stat.h \
937 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
939 # Check for thread headers.
940 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
941 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
943 # These tests can't be done till we know if we have limits.h.
947 # ----------------------
948 # Checks for C++ headers
949 # ----------------------
951 dnl Autoconf will give an error in the configure script if there is no
952 dnl C++ preprocessor. Hack to prevent that.
953 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
955 m4_popdef([AC_MSG_ERROR])[]dnl
959 AC_CHECK_HEADERS(unordered_map)
960 AC_CHECK_HEADERS(tr1/unordered_map)
961 AC_CHECK_HEADERS(ext/hash_map)
970 # These libraries may be used by collect2.
971 # We may need a special search path to get them linked.
972 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
974 for libs in '' -lld -lmld \
975 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
976 '-L/usr/lib/cmplrs/cc3.11 -lmld'
979 AC_TRY_LINK_FUNC(ldopen,
980 [gcc_cv_collect2_libs="$libs"; break])
983 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
984 case $gcc_cv_collect2_libs in
986 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
988 AC_SUBST(COLLECT2_LIBS)
990 # When building Ada code on Alpha, we need exc_resume which is usually in
991 # -lexc. So test for it.
994 AC_SEARCH_LIBS(exc_resume, exc)
997 AC_SUBST(GNAT_LIBEXC)
999 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1002 AC_SEARCH_LIBS(kstat_open, kstat)
1003 EXTRA_GCC_LIBS="$LIBS"
1005 AC_SUBST(EXTRA_GCC_LIBS)
1007 # Some systems put ldexp and frexp in libm instead of libc; assume
1008 # they're both in the same place. jcf-dump needs them.
1011 AC_SEARCH_LIBS(ldexp, m)
1016 # Use <inttypes.h> only if it exists,
1017 # doesn't clash with <sys/types.h>, and declares intmax_t.
1018 AC_MSG_CHECKING(for inttypes.h)
1019 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1020 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1021 [[#include <sys/types.h>
1022 #include <inttypes.h>]],
1023 [[intmax_t i = -1;]])],
1024 [gcc_cv_header_inttypes_h=yes],
1025 [gcc_cv_header_inttypes_h=no])])
1026 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1027 if test $gcc_cv_header_inttypes_h = yes; then
1028 AC_DEFINE(HAVE_INTTYPES_H, 1,
1029 [Define if you have a working <inttypes.h> header file.])
1032 dnl Disabled until we have a complete test for buggy enum bitfields.
1033 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1035 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1036 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1037 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1038 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1039 putchar_unlocked putc_unlocked)
1040 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1041 sysconf strsignal getrusage nl_langinfo \
1042 gettimeofday mbstowcs wcswidth mmap setlocale \
1043 gcc_UNLOCKED_FUNCS madvise)
1045 if test x$ac_cv_func_mbstowcs = xyes; then
1046 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1047 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1053 [gcc_cv_func_mbstowcs_works=yes],
1054 [gcc_cv_func_mbstowcs_works=no],
1055 [gcc_cv_func_mbstowcs_works=yes])])
1056 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1057 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1058 [Define this macro if mbstowcs does not crash when its
1059 first argument is NULL.])
1063 AC_CHECK_TYPE(ssize_t, int)
1064 AC_CHECK_TYPE(caddr_t, char *)
1066 gcc_AC_FUNC_MMAP_BLACKLIST
1070 # Under VMS, vfork works very differently than on Unix. The standard test
1071 # won't work, and it isn't easily adaptable. It makes more sense to
1073 ac_cv_func_vfork_works=yes
1078 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1079 # iconv() prototype.
1080 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1081 [AC_LANG_PUSH([C++])
1083 AC_LANG_POP([C++])],
1086 # Until we have in-tree GNU iconv:
1088 AC_SUBST(LIBICONV_DEP)
1094 # We will need to find libiberty.h and ansidecl.h
1095 saved_CFLAGS="$CFLAGS"
1096 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1097 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1098 strsignal strstr strverscmp \
1099 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1100 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1101 #include "ansidecl.h"
1102 #include "system.h"])
1104 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1105 #include "ansidecl.h"
1107 #ifdef HAVE_SYS_RESOURCE_H
1108 #include <sys/resource.h>
1112 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1113 #include "ansidecl.h"
1115 #ifdef HAVE_SYS_RESOURCE_H
1116 #include <sys/resource.h>
1118 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1119 [Define to `long' if <sys/resource.h> doesn't define.])])
1121 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1122 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1123 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1124 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1125 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1126 #include "ansidecl.h"
1135 gcc_AC_CHECK_DECLS(times, , ,[
1136 #include "ansidecl.h"
1138 #ifdef HAVE_SYS_TIMES_H
1139 #include <sys/times.h>
1143 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1144 #include "ansidecl.h"
1149 # More time-related stuff.
1150 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1151 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1152 #include "ansidecl.h"
1154 #ifdef HAVE_SYS_TIMES_H
1155 #include <sys/times.h>
1157 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1158 if test $ac_cv_struct_tms = yes; then
1159 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1160 [Define if <sys/times.h> defines struct tms.])
1163 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1164 # revisit after autoconf 2.50.
1165 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1166 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1167 #include "ansidecl.h"
1169 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1170 if test $gcc_cv_type_clock_t = yes; then
1171 AC_DEFINE(HAVE_CLOCK_T, 1,
1172 [Define if <time.h> defines clock_t.])
1175 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1176 CFLAGS="$saved_CFLAGS"
1178 gcc_AC_INITFINI_ARRAY
1180 # mkdir takes a single argument on some systems.
1181 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1189 # With Setjmp/Longjmp based exception handling.
1190 AC_ARG_ENABLE(sjlj-exceptions,
1191 [AS_HELP_STRING([--enable-sjlj-exceptions],
1192 [arrange to use setjmp/longjmp exception handling])],
1195 if test $enableval != yes; then
1196 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1201 force_sjlj_exceptions=yes],
1204 force_sjlj_exceptions=yes
1208 force_sjlj_exceptions=no
1211 if test $force_sjlj_exceptions = yes; then
1212 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1213 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1214 [Define 0/1 to force the choice for exception handling model.])
1217 # --------------------------------------------------------
1218 # Build, host, and target specific configuration fragments
1219 # --------------------------------------------------------
1221 # Collect build-machine-specific information.
1222 . ${srcdir}/config.build
1224 # Collect host-machine-specific information.
1225 . ${srcdir}/config.host
1229 # Collect target-machine-specific information.
1230 . ${srcdir}/config.gcc
1232 extra_objs="${host_extra_objs} ${extra_objs}"
1233 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1235 # Default the target-machine variables that were not explicitly set.
1236 if test x"$tm_file" = x
1237 then tm_file=$cpu_type/$cpu_type.h; fi
1239 if test x"$extra_headers" = x
1240 then extra_headers=; fi
1242 if test x$md_file = x
1243 then md_file=$cpu_type/$cpu_type.md; fi
1245 if test x$out_file = x
1246 then out_file=$cpu_type/$cpu_type.c; fi
1248 if test x"$tmake_file" = x
1249 then tmake_file=$cpu_type/t-$cpu_type
1252 if test x"$dwarf2" = xyes
1253 then tm_file="$tm_file tm-dwarf2.h"
1256 # Say what files are being used for the output code and MD file.
1257 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1258 echo "Using \`$srcdir/config/$md_file' as machine description file."
1260 # If any of the xm_file variables contain nonexistent files, warn
1261 # about them and drop them.
1264 for x in $build_xm_file; do
1265 if test -f $srcdir/config/$x
1267 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1273 for x in $host_xm_file; do
1274 if test -f $srcdir/config/$x
1276 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1282 for x in $xm_file; do
1283 if test -f $srcdir/config/$x
1285 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1291 for f in $tm_file; do
1294 if test $count = ax; then
1295 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1297 echo "Using the following target machine macro files:"
1298 for f in $tm_file; do
1299 echo " $srcdir/config/$f"
1303 if test x$need_64bit_hwint = xyes; then
1304 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1305 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1308 if test x$use_long_long_for_widest_fast_int = xyes; then
1309 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1310 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1311 efficiently supported by the host hardware.])
1315 for f in $host_xm_file; do
1318 if test $count = a; then
1320 elif test $count = ax; then
1321 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1323 echo "Using the following host machine macro files:"
1324 for f in $host_xm_file; do
1325 echo " $srcdir/config/$f"
1328 echo "Using ${out_host_hook_obj} for host machine hooks."
1330 if test "$host_xm_file" != "$build_xm_file"; then
1332 for f in $build_xm_file; do
1335 if test $count = a; then
1337 elif test $count = ax; then
1338 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1340 echo "Using the following build machine macro files:"
1341 for f in $build_xm_file; do
1342 echo " $srcdir/config/$f"
1347 if test -n "$configured_native_system_header_dir"; then
1348 native_system_header_dir=$configured_native_system_header_dir
1350 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1351 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1355 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1356 gcc_cv_mcontext_underscores,
1358 #include <sys/cdefs.h>
1359 #include <sys/signal.h>
1360 #include <ucontext.h>
1361 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1363 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1364 if test $gcc_cv_mcontext_underscores = yes; then
1365 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1366 [mcontext_t fields start with __])
1375 # Check if a valid thread package
1376 case ${enable_threads} in
1379 target_thread_file='single'
1383 target_thread_file='single'
1385 aix | dce | lynx | mipssde | posix | rtems | \
1386 single | tpf | vxworks | win32)
1387 target_thread_file=${enable_threads}
1390 echo "${enable_threads} is an unknown thread package" 1>&2
1395 if test x${thread_file} = x; then
1396 # No thread file set by target-specific clauses in config.gcc,
1397 # so use file chosen by default logic above
1398 thread_file=${target_thread_file}
1401 # Make gthr-default.h if we have a thread file.
1403 if test $thread_file != single; then
1404 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1405 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1406 rm -f gthr-default.h-t
1408 mv -f gthr-default.h-t gthr-default.h
1410 gthread_flags=-DHAVE_GTHR_DEFAULT
1412 AC_SUBST(gthread_flags)
1419 if test x$enable___cxa_atexit = xyes || \
1420 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1421 if test x$host = x$target; then
1423 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1424 # keyed to flag_use_cxa_atexit
1429 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1430 [echo "__cxa_atexit can't be enabled on this target"])
1434 # We can't check for __cxa_atexit when building a cross, so assume
1438 if test x$use_cxa_atexit = xyes; then
1439 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1440 [Define if you want to use __cxa_atexit, rather than atexit, to
1441 register C++ destructors for local statics and global objects.
1442 This is essential for fully standards-compliant handling of
1443 destructors, but requires __cxa_atexit in libc.])
1447 # Look for a file containing extra machine modes.
1448 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1449 extra_modes_file='$(srcdir)'/config/${extra_modes}
1450 AC_SUBST(extra_modes_file)
1451 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1452 [Define to the name of a file containing a list of extra machine modes
1453 for this architecture.])
1456 # Convert extra_options into a form suitable for Makefile use.
1459 for f in $extra_options; do
1460 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1461 all_opt_files="$all_opt_files $srcdir/config/$f"
1463 AC_SUBST(extra_opt_files)
1465 # auto-host.h is the file containing items generated by autoconf and is
1466 # the first file included by config.h.
1467 # If host=build, it is correct to have bconfig include auto-host.h
1468 # as well. If host!=build, we are in error and need to do more
1469 # work to find out the build config parameters.
1470 if test x$host = x$build
1472 build_auto=auto-host.h
1474 # We create a subdir, then run autoconf in the subdir.
1475 # To prevent recursion we set host and build for the new
1476 # invocation of configure to the build for this invocation
1483 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1484 *) realsrcdir=../${srcdir};;
1486 saved_CFLAGS="${CFLAGS}"
1487 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1488 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1489 ${realsrcdir}/configure \
1490 --enable-languages=${enable_languages-all} \
1491 --target=$target_alias --host=$build_alias --build=$build_alias
1492 CFLAGS="${saved_CFLAGS}"
1494 # We just finished tests for the build machine, so rename
1495 # the file auto-build.h in the gcc directory.
1496 mv auto-host.h ../auto-build.h
1499 build_auto=auto-build.h
1501 AC_SUBST(build_subdir)
1503 tm_file="${tm_file} defaults.h"
1504 tm_p_file="${tm_p_file} tm-preds.h"
1505 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1506 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1507 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1508 # put this back in temporarily.
1509 xm_file="auto-host.h ansidecl.h ${xm_file}"
1516 # Compile in configure arguments.
1517 if test -f configargs.h ; then
1518 # Being re-configured.
1519 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1520 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1522 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1525 # Double all backslashes and backslash all quotes to turn
1526 # gcc_config_arguments into a C string.
1527 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1528 $gcc_config_arguments
1530 gcc_config_arguments_str=`cat conftest.out`
1533 cat > configargs.h <<EOF
1534 /* Generated automatically. */
1535 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1536 static const char thread_model[] = "$thread_file";
1538 static const struct {
1539 const char *name, *value;
1540 } configure_default_options[] = $configure_default_options;
1545 gcc_BASEVER=`cat $srcdir/BASE-VER`
1546 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1547 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1548 if test -f $srcdir/REVISION ; then
1549 gcc_REVISION=`cat $srcdir/REVISION`
1553 cat > plugin-version.h <<EOF
1554 #include "configargs.h"
1556 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1557 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1558 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1559 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1561 static char basever[] = "$gcc_BASEVER";
1562 static char datestamp[] = "$gcc_DATESTAMP";
1563 static char devphase[] = "$gcc_DEVPHASE";
1564 static char revision[] = "$gcc_REVISION";
1566 /* FIXME plugins: We should make the version information more precise.
1567 One way to do is to add a checksum. */
1569 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1571 configuration_arguments};
1575 # Internationalization
1576 ZW_GNU_GETTEXT_SISTER_DIR
1578 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1579 # -liconv on the link line twice.
1580 case "$LIBINTL" in *$LIBICONV*)
1584 AC_ARG_ENABLE(secureplt,
1585 [AS_HELP_STRING([--enable-secureplt],
1586 [enable -msecure-plt by default for PowerPC])],
1589 AC_ARG_ENABLE(leading-mingw64-underscores,
1590 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1591 [enable leading underscores on 64 bit mingw targets]),
1593 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1594 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1595 [Define if we should use leading underscore on 64 bit mingw targets])])
1598 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1601 AC_ARG_ENABLE(frame-pointer,
1602 [AS_HELP_STRING([--enable-frame-pointer],
1603 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1606 linux* | darwin[[8912]]*)
1607 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1609 enable_frame_pointer=no
1612 enable_frame_pointer=yes
1617 # Windows32 Registry support for specifying GCC installation paths.
1618 AC_ARG_ENABLE(win32-registry,
1619 [AS_HELP_STRING([--disable-win32-registry],
1620 [disable lookup of installation paths in the
1621 Registry on Windows hosts])
1622 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1623 AS_HELP_STRING([--enable-win32-registry=KEY],
1624 [use KEY instead of GCC version as the last portion
1625 of the registry key])],,)
1628 win32 | pe | cygwin* | mingw32* | uwin*)
1629 if test "x$enable_win32_registry" != xno; then
1630 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1633 if test "x$enable_win32_registry" != xno; then
1634 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1635 [Define to 1 if installation paths should be looked up in the Windows
1636 Registry. Ignored on non-Windows hosts.])
1638 if test "x$enable_win32_registry" != xyes \
1639 && test "x$enable_win32_registry" != x; then
1640 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1641 [Define to be the last component of the Windows registry key under which
1642 to look for installation paths. The full key used will be
1643 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1644 The default is the GCC version number.])
1650 # Get an absolute path to the GCC top-level source directory
1651 holddir=`${PWDCMD-pwd}`
1653 topdir=`${PWDCMD-pwd}`
1656 # Conditionalize the makefile for this host machine.
1658 for f in ${host_xmake_file}
1660 if test -f ${srcdir}/config/$f
1662 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1666 # Conditionalize the makefile for this target machine.
1668 for f in ${tmake_file}
1670 if test -f ${srcdir}/config/$f
1672 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1675 tmake_file="${tmake_file_}"
1677 out_object_file=`basename $out_file .c`.o
1678 common_out_object_file=`basename $common_out_file .c`.o
1680 tm_file_list="options.h"
1681 tm_include_list="options.h insn-constants.h"
1682 for f in $tm_file; do
1685 f=`echo $f | sed 's/^..//'`
1686 tm_file_list="${tm_file_list} $f"
1687 tm_include_list="${tm_include_list} $f"
1690 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1691 tm_include_list="${tm_include_list} $f"
1694 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1695 tm_include_list="${tm_include_list} config/$f"
1700 libgcc_tm_file_list=
1701 libgcc_tm_include_list=
1702 for f in $libgcc_tm_file; do
1703 libgcc_tm_file_list="${libgcc_tm_file_list} \$(srcdir)/../libgcc/config/$f"
1704 libgcc_tm_include_list="${libgcc_tm_include_list} ../libgcc/config/$f"
1709 for f in $tm_p_file; do
1712 tm_p_file_list="${tm_p_file_list} $f"
1713 tm_p_include_list="${tm_p_include_list} $f"
1716 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1717 tm_p_include_list="${tm_p_include_list} config/$f"
1723 for f in $xm_file; do
1726 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1727 xm_include_list="${xm_include_list} $f"
1730 xm_file_list="${xm_file_list} $f"
1731 xm_include_list="${xm_include_list} $f"
1734 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1735 xm_include_list="${xm_include_list} config/$f"
1741 host_xm_include_list=
1742 for f in $host_xm_file; do
1745 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1746 host_xm_include_list="${host_xm_include_list} $f"
1749 host_xm_file_list="${host_xm_file_list} $f"
1750 host_xm_include_list="${host_xm_include_list} $f"
1753 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1754 host_xm_include_list="${host_xm_include_list} config/$f"
1760 for f in $build_xm_file; do
1763 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1764 build_xm_include_list="${build_xm_include_list} $f"
1766 auto-build.h | auto-host.h )
1767 build_xm_file_list="${build_xm_file_list} $f"
1768 build_xm_include_list="${build_xm_include_list} $f"
1771 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1772 build_xm_include_list="${build_xm_include_list} config/$f"
1777 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1778 # cross-compiler which does not use the native headers and libraries.
1779 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1780 CROSS= AC_SUBST(CROSS)
1781 ALL=all.internal AC_SUBST(ALL)
1782 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1784 if test "x$with_build_sysroot" != x; then
1785 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1787 # This value is used, even on a native system, because
1788 # CROSS_SYSTEM_HEADER_DIR is just
1789 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1790 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1793 if test x$host != x$target
1795 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1797 SYSTEM_HEADER_DIR=$build_system_header_dir
1798 case "$host","$target" in
1799 # Darwin crosses can use the host system's libraries and headers,
1800 # because of the fat library support. Of course, it must be the
1801 # same version of Darwin on both sides. Allow the user to
1802 # just say --target=foo-darwin without a version number to mean
1803 # "the version on this system".
1804 *-*-darwin*,*-*-darwin*)
1805 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1806 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1807 if test $hostos = $targetos -o $targetos = darwin ; then
1809 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1814 i?86-*-*,x86_64-*-* \
1815 | powerpc*-*-*,powerpc64*-*-*)
1816 CROSS="$CROSS -DNATIVE_CROSS" ;;
1821 if test "x$with_headers" = x; then
1828 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1829 SYSTEM_HEADER_DIR=$build_system_header_dir
1832 # If this is a cross-compiler that does not
1833 # have its own set of headers then define
1836 # If this is using newlib, without having the headers available now,
1837 # then define inhibit_libc in LIBGCC2_CFLAGS.
1838 # This prevents libgcc2 from containing any code which requires libc
1840 : ${inhibit_libc=false}
1841 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1842 test x$with_newlib = xyes ; } &&
1843 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1846 AC_SUBST(inhibit_libc)
1848 # When building gcc with a cross-compiler, we need to adjust things so
1849 # that the generator programs are still built with the native compiler.
1850 # Also, we cannot run fixincludes.
1852 # These are the normal (build=host) settings:
1853 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1854 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1855 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1856 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1858 # And these apply if build != host, or we are generating coverage data
1859 if test x$build != x$host || test "x$coverage_flags" != x
1861 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1862 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1865 # Expand extra_headers to include complete path.
1866 # This substitutes for lots of t-* files.
1868 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1869 for file in ${extra_headers} ; do
1870 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1873 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1874 if test x"$use_gcc_tgmath" = xyes
1875 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1878 # Define collect2 in Makefile.
1879 case $host_can_use_collect2 in
1881 *) collect2='collect2$(exeext)' ;;
1883 AC_SUBST([collect2])
1885 # Add a definition of USE_COLLECT2 if system wants one.
1886 case $use_collect2 in
1887 no) use_collect2= ;;
1890 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1891 xm_defines="${xm_defines} USE_COLLECT2"
1892 case $host_can_use_collect2 in
1894 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1900 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1901 [Define to the name of the LTO plugin DSO that must be
1902 passed to the linker's -plugin=LIB option.])
1904 # ---------------------------
1905 # Assembler & linker features
1906 # ---------------------------
1908 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1909 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1910 # However when ld-new is first executed from the build tree, libtool will
1911 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1912 # to the build tree. While doing this we need to use the previous-stage
1913 # linker, or we have an infinite loop. The presence of a shell script as
1914 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1915 # the gcc/collect-ld script. So we need to know how libtool works, or
1916 # exec-tool will fail.
1918 m4_defun([_LT_CONFIG_COMMANDS], [])
1921 AC_SUBST(enable_fast_install)
1923 # Identify the assembler which will work hand-in-glove with the newly
1924 # built GCC, so that we can examine its features. This is the assembler
1925 # which will be driven by the driver program.
1927 # If build != host, and we aren't building gas in-tree, we identify a
1928 # build->target assembler and hope that it will have the same features
1929 # as the host->target assembler we'll be using.
1930 gcc_cv_gas_major_version=
1931 gcc_cv_gas_minor_version=
1932 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1934 m4_pattern_allow([AS_FOR_TARGET])dnl
1935 AS_VAR_SET_IF(gcc_cv_as,, [
1936 if test -x "$DEFAULT_ASSEMBLER"; then
1937 gcc_cv_as="$DEFAULT_ASSEMBLER"
1938 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1939 && test -f ../gas/Makefile \
1940 && test x$build = x$host; then
1941 gcc_cv_as=../gas/as-new$build_exeext
1942 elif test -x as$build_exeext; then
1943 # Build using assembler in the current directory.
1944 gcc_cv_as=./as$build_exeext
1945 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1946 gcc_cv_as="$AS_FOR_TARGET"
1948 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1951 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1952 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1953 case "$ORIGINAL_AS_FOR_TARGET" in
1954 ./as | ./as$build_exeext) ;;
1955 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1958 AC_MSG_CHECKING(what assembler to use)
1959 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1960 # Single tree build which includes gas. We want to prefer it
1961 # over whatever linker top-level may have detected, since
1962 # we'll use what we're building after installation anyway.
1963 AC_MSG_RESULT(newly built gas)
1965 _gcc_COMPUTE_GAS_VERSION
1966 in_tree_gas_is_elf=no
1967 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1968 || (grep 'obj_format = multi' ../gas/Makefile \
1969 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1971 in_tree_gas_is_elf=yes
1974 AC_MSG_RESULT($gcc_cv_as)
1978 # Identify the linker which will work hand-in-glove with the newly
1979 # built GCC, so that we can examine its features. This is the linker
1980 # which will be driven by the driver program.
1982 # If build != host, and we aren't building gas in-tree, we identify a
1983 # build->target linker and hope that it will have the same features
1984 # as the host->target linker we'll be using.
1985 gcc_cv_gld_major_version=
1986 gcc_cv_gld_minor_version=
1987 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1988 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1990 AS_VAR_SET_IF(gcc_cv_ld,, [
1991 if test -x "$DEFAULT_LINKER"; then
1992 gcc_cv_ld="$DEFAULT_LINKER"
1993 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1994 && test -f ../ld/Makefile \
1995 && test x$build = x$host; then
1996 gcc_cv_ld=../ld/ld-new$build_exeext
1997 elif test -x collect-ld$build_exeext; then
1998 # Build using linker in the current directory.
1999 gcc_cv_ld=./collect-ld$build_exeext
2000 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2001 gcc_cv_ld="$LD_FOR_TARGET"
2003 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2006 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2007 PLUGIN_LD=`basename $gcc_cv_ld`
2008 AC_ARG_WITH(plugin-ld,
2009 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2010 [if test x"$withval" != x; then
2011 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2012 PLUGIN_LD="$withval"
2014 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2015 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
2017 # Check to see if we are using gold instead of ld
2018 AC_MSG_CHECKING(whether we are using gold)
2020 if test x$gcc_cv_ld != x; then
2021 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2022 | grep "GNU gold" > /dev/null; then
2026 AC_MSG_RESULT($ld_is_gold)
2028 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2029 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2030 case "$ORIGINAL_LD_FOR_TARGET" in
2031 ./collect-ld | ./collect-ld$build_exeext) ;;
2032 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2035 AC_MSG_CHECKING(what linker to use)
2036 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2037 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2038 # Single tree build which includes ld. We want to prefer it
2039 # over whatever linker top-level may have detected, since
2040 # we'll use what we're building after installation anyway.
2041 AC_MSG_RESULT(newly built ld)
2043 in_tree_ld_is_elf=no
2044 if (grep 'EMUL = .*elf' ../ld/Makefile \
2045 || grep 'EMUL = .*linux' ../ld/Makefile \
2046 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2047 in_tree_ld_is_elf=yes
2048 elif test "$ld_is_gold" = yes; then
2049 in_tree_ld_is_elf=yes
2051 for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.in $gcc_cv_ld_gld_srcdir/Makefile.in
2054 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2055 if test x$gcc_cv_gld_version != x; then
2059 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2060 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2063 AC_MSG_RESULT($gcc_cv_ld)
2067 # Figure out what nm we will be using.
2068 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2069 AS_VAR_SET_IF(gcc_cv_nm,, [
2070 if test -f $gcc_cv_binutils_srcdir/configure.in \
2071 && test -f ../binutils/Makefile \
2072 && test x$build = x$host; then
2073 gcc_cv_nm=../binutils/nm-new$build_exeext
2074 elif test -x nm$build_exeext; then
2075 gcc_cv_nm=./nm$build_exeext
2076 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2077 gcc_cv_nm="$NM_FOR_TARGET"
2079 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2082 AC_MSG_CHECKING(what nm to use)
2083 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2084 # Single tree build which includes binutils.
2085 AC_MSG_RESULT(newly built nm)
2088 AC_MSG_RESULT($gcc_cv_nm)
2092 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2093 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2094 case "$ORIGINAL_NM_FOR_TARGET" in
2095 ./nm | ./nm$build_exeext) ;;
2096 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2100 # Figure out what objdump we will be using.
2101 AS_VAR_SET_IF(gcc_cv_objdump,, [
2102 if test -f $gcc_cv_binutils_srcdir/configure.in \
2103 && test -f ../binutils/Makefile \
2104 && test x$build = x$host; then
2105 # Single tree build which includes binutils.
2106 gcc_cv_objdump=../binutils/objdump$build_exeext
2107 elif test -x objdump$build_exeext; then
2108 gcc_cv_objdump=./objdump$build_exeext
2109 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2110 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2112 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2115 AC_MSG_CHECKING(what objdump to use)
2116 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2117 # Single tree build which includes binutils.
2118 AC_MSG_RESULT(newly built objdump)
2119 elif test x$gcc_cv_objdump = x; then
2120 AC_MSG_RESULT(not found)
2122 AC_MSG_RESULT($gcc_cv_objdump)
2125 # Figure out what readelf we will be using.
2126 AS_VAR_SET_IF(gcc_cv_readelf,, [
2127 if test -f $gcc_cv_binutils_srcdir/configure.in \
2128 && test -f ../binutils/Makefile \
2129 && test x$build = x$host; then
2130 # Single tree build which includes binutils.
2131 gcc_cv_readelf=../binutils/readelf$build_exeext
2132 elif test -x readelf$build_exeext; then
2133 gcc_cv_readelf=./readelf$build_exeext
2135 AC_PATH_PROG(gcc_cv_readelf, readelf)
2138 AC_MSG_CHECKING(what readelf to use)
2139 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2140 # Single tree build which includes binutils.
2141 AC_MSG_RESULT(newly built readelf)
2142 elif test x$gcc_cv_readelf = x; then
2143 AC_MSG_RESULT(not found)
2145 AC_MSG_RESULT($gcc_cv_readelf)
2148 # Figure out what assembler alignment features are present.
2149 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2153 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2154 [Define if your assembler supports .balign and .p2align.])])
2156 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2159 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2160 [Define if your assembler supports specifying the maximum number
2161 of bytes to skip when using the GAS .p2align command.])])
2163 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2166 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2167 [Define if your assembler supports .literal16.])])
2169 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2171 [conftest_label1: .word 0
2173 conftest_label2: .word 0
2175 [if test x$gcc_cv_nm != x; then
2176 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2177 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2178 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2180 else gcc_cv_as_subsection_m1=yes
2182 rm -f conftest.nm1 conftest.nm2
2184 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2185 [Define if your assembler supports .subsection and .subsection -1 starts
2186 emitting at the beginning of your section.])])
2188 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2191 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2193 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2195 [ .weakref foobar, barfnot],,
2196 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2198 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2201 .NSUBSPA $CODE$,COMDAT],,
2202 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2204 # .hidden needs to be supported in both the assembler and the linker,
2205 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2206 # This is irritatingly difficult to feature test for; we have to check the
2207 # date string after the version number. If we've got an in-tree
2208 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2210 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2211 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2215 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2216 # STV_HIDDEN, so disable .hidden support if so.
2218 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2219 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2220 cat > conftest.s <<EOF
2227 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2228 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2229 grep '\.hidden default' > /dev/null; then
2232 gcc_cv_as_hidden=yes
2235 # Assume bug is present if objdump is missing.
2240 gcc_cv_as_hidden=yes
2245 # Darwin as has some visibility support, though with a different syntax.
2246 gcc_cv_as_hidden=yes
2250 # gnu_indirect_function type is an extension proposed at
2251 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2252 # selection of function implementation
2253 AC_ARG_ENABLE(gnu-indirect-function,
2254 [AS_HELP_STRING([--enable-gnu-indirect-function],
2255 [enable the use of the @gnu_indirect_function to glibc systems])],
2256 [case $enable_gnu_indirect_function in
2258 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2259 Valid choices are 'yes' and 'no'.]) ;;
2261 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2262 if test x$enable_gnu_indirect_function = xyes; then
2263 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2264 [Define if your system supports gnu indirect functions.])
2268 if test $in_tree_ld != yes ; then
2269 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2270 if echo "$ld_ver" | grep GNU > /dev/null; then
2271 if test x"$ld_is_gold" = xyes; then
2272 # GNU gold --version looks like this:
2274 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2276 # We extract the binutils version which is more familiar and specific
2277 # than the gold version.
2278 ld_vers=`echo $ld_ver | sed -n \
2279 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2281 # GNU ld --version looks like this:
2283 # GNU ld (GNU Binutils) 2.21.51.20110225
2284 ld_vers=`echo $ld_ver | sed -n \
2285 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2287 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2288 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2289 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2290 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2295 # Solaris 2 ld -V output looks like this for a regular version:
2297 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2299 # but test versions add stuff at the end:
2301 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2303 ld_ver=`$gcc_cv_ld -V 2>&1`
2304 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2305 ld_vers=`echo $ld_ver | sed -n \
2306 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2307 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2308 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2316 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2317 [[if test $in_tree_ld = yes ; then
2319 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2320 && test $in_tree_ld_is_elf = yes; then
2321 gcc_cv_ld_hidden=yes
2324 gcc_cv_ld_hidden=yes
2325 if test x"$ld_is_gold" = xyes; then
2327 elif echo "$ld_ver" | grep GNU > /dev/null; then
2328 if test 0"$ld_date" -lt 20020404; then
2329 if test -n "$ld_date"; then
2330 # If there was date string, but was earlier than 2002-04-04, fail
2332 elif test -z "$ld_vers"; then
2333 # If there was no date string nor ld version number, something is wrong
2336 test -z "$ld_vers_patch" && ld_vers_patch=0
2337 if test "$ld_vers_major" -lt 2; then
2339 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2340 gcc_cv_ld_hidden="no"
2341 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2349 # Darwin ld has some visibility support.
2350 gcc_cv_ld_hidden=yes
2352 hppa64*-*-hpux* | ia64*-*-hpux*)
2353 gcc_cv_ld_hidden=yes
2356 # .hidden support was backported to Solaris 8, starting with ld
2358 if test "$ld_vers_minor" -ge 276; then
2359 gcc_cv_ld_hidden=yes
2364 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2365 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2366 # .symbolic was only added in Solaris 9 12/02.
2367 gcc_cv_ld_hidden=yes
2375 libgcc_visibility=no
2376 AC_SUBST(libgcc_visibility)
2377 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2378 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2379 libgcc_visibility=yes
2380 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2381 [Define if your assembler and linker support .hidden.])
2384 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2385 gcc_cv_ld_ro_rw_mix=unknown
2386 if test $in_tree_ld = yes ; then
2387 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2388 && test $in_tree_ld_is_elf = yes; then
2389 gcc_cv_ld_ro_rw_mix=read-write
2391 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2392 echo '.section myfoosect, "a"' > conftest1.s
2393 echo '.section myfoosect, "aw"' > conftest2.s
2394 echo '.byte 1' >> conftest2.s
2395 echo '.section myfoosect, "a"' > conftest3.s
2396 echo '.byte 0' >> conftest3.s
2397 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2398 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2399 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2400 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2401 conftest2.o conftest3.o > /dev/null 2>&1; then
2402 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2403 | sed -e '/myfoosect/!d' -e N`
2404 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2405 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2406 gcc_cv_ld_ro_rw_mix=read-only
2408 gcc_cv_ld_ro_rw_mix=read-write
2413 rm -f conftest.* conftest[123].*
2416 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2417 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2418 [Define if your linker links a mix of read-only
2419 and read-write sections into a read-write section.])
2421 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2423 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2424 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2432 [[# GAS versions before 2.11 do not support uleb128,
2433 # despite appearing to.
2434 # ??? There exists an elf-specific test that will crash
2435 # the assembler. Perhaps it's better to figure out whether
2436 # arbitrary sections are supported and try the test.
2437 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2438 if echo "$as_ver" | grep GNU > /dev/null; then
2439 as_vers=`echo $as_ver | sed -n \
2440 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2441 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2442 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2443 if test $as_major -eq 2 && test $as_minor -lt 11
2445 else gcc_cv_as_leb128=yes
2448 [AC_DEFINE(HAVE_AS_LEB128, 1,
2449 [Define if your assembler supports .sleb128 and .uleb128.])])
2451 # Check if we have assembler support for unwind directives.
2452 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2459 .cfi_escape 1, 2, 3, 4, 5
2463 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2464 # read-only and read-write sections, we need to make sure that the
2465 # assembler used emits read-write .eh_frame sections.
2466 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2467 if test "x$gcc_cv_objdump" != x; then
2468 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2469 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2470 gcc_cv_as_cfi_directive=no
2473 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2474 # On Solaris/x86, make sure that GCC and gas agree on using
2475 # read-only .eh_frame sections for 64-bit.
2476 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2477 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2478 sed -e /.eh_frame/!d -e N | \
2479 grep READONLY > /dev/null; then
2480 gcc_cv_as_cfi_directive=yes
2482 gcc_cv_as_cfi_directive=no
2486 gcc_cv_as_cfi_directive=yes
2491 # no objdump, err on the side of caution
2492 gcc_cv_as_cfi_directive=no
2495 gcc_cv_as_cfi_directive=yes
2499 gcc_cv_as_cfi_directive=yes
2502 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2503 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2507 .cfi_adjust_cfa_offset 64
2509 .cfi_adjust_cfa_offset 128
2512 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2513 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2514 gcc_cv_as_cfi_advance_working=yes
2518 # no objdump, err on the side of caution
2519 gcc_cv_as_cfi_advance_working=no
2521 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2522 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2523 [`if test $gcc_cv_as_cfi_directive = yes \
2524 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2525 [Define 0/1 if your assembler supports CFI directives.])
2527 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2528 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2529 gcc_cv_as_cfi_personality_directive, ,,
2532 .cfi_personality 0, symbol
2534 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2535 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2536 then echo 1; else echo 0; fi`],
2537 [Define 0/1 if your assembler supports .cfi_personality.])
2539 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2540 gcc_cv_as_cfi_sections_directive, ,,
2542 .cfi_sections .debug_frame, .eh_frame
2546 win32 | pe | cygwin* | mingw32* | uwin*)
2547 # Need to check that we generated the correct relocation for the
2548 # .debug_frame section. This was fixed for binutils 2.21.
2549 gcc_cv_as_cfi_sections_directive=no
2550 if test "x$gcc_cv_objdump" != x; then
2551 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2552 grep secrel > /dev/null; then
2553 gcc_cv_as_cfi_sections_directive=yes
2558 gcc_cv_as_cfi_sections_directive=yes
2561 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2562 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2563 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2564 then echo 1; else echo 0; fi`],
2565 [Define 0/1 if your assembler supports .cfi_sections.])
2567 # GAS versions up to and including 2.11.0 may mis-optimize
2569 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2577 .section .eh_frame,"aw",@progbits
2579 .4byte .LECIE1-.LSCIE1
2593 .4byte .LEFDE1-.LASFDE1
2595 .4byte .LASFDE1-__FRAME_BEGIN__
2603 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2604 cat > conftest.lit <<EOF
2605 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2606 0010 01000000 12000000 18000000 00000000 ................
2607 0020 08000000 04080000 0044 .........D @&t@
2609 cat > conftest.big <<EOF
2610 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2611 0010 00000001 00000012 00000018 00000000 ................
2612 0020 00000008 04000000 0844 .........D @&t@
2614 # If the assembler didn't choke, and we can objdump,
2615 # and we got the correct data, then succeed.
2616 # The text in the here-document typically retains its unix-style line
2617 # endings, while the output of objdump will use host line endings.
2618 # Therefore, use diff -b for the comparisons.
2619 if test x$gcc_cv_objdump != x \
2620 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2621 | tail -3 > conftest.got \
2622 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2623 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2625 gcc_cv_as_eh_frame=yes
2626 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2627 gcc_cv_as_eh_frame=buggy
2629 # Uh oh, what do we do now?
2630 gcc_cv_as_eh_frame=no
2633 if test $gcc_cv_as_eh_frame = buggy; then
2634 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2635 [Define if your assembler mis-optimizes .eh_frame data.])
2638 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2639 [elf,2,12,0], [--fatal-warnings],
2640 [.section .rodata.str, "aMS", @progbits, 1])
2641 if test $gcc_cv_as_shf_merge = no; then
2642 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2643 [elf,2,12,0], [--fatal-warnings],
2644 [.section .rodata.str, "aMS", %progbits, 1])
2646 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2647 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2648 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2650 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2651 gcc_cv_as_comdat_group,
2652 [elf,2,16,0], [--fatal-warnings],
2653 [.section .text,"axG",@progbits,.foo,comdat])
2654 if test $gcc_cv_as_comdat_group = yes; then
2655 gcc_cv_as_comdat_group_percent=no
2656 gcc_cv_as_comdat_group_group=no
2658 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2659 gcc_cv_as_comdat_group_percent,
2660 [elf,2,16,0], [--fatal-warnings],
2661 [.section .text,"axG",%progbits,.foo,comdat])
2662 if test $gcc_cv_as_comdat_group_percent = yes; then
2663 gcc_cv_as_comdat_group_group=no
2666 # Sun as uses a completely different syntax.
2671 .group foo,".text%foo",#comdat
2672 .section ".text%foo", #alloc,#execinstr,#progbits
2677 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2679 .group foo,.text%foo,#comdat
2680 .section .text%foo, "ax", @progbits
2686 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2687 gcc_cv_as_comdat_group_group,
2693 if test x"$ld_is_gold" = xyes; then
2695 elif test $in_tree_ld = yes ; then
2697 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2698 && test $in_tree_ld_is_elf = yes; then
2701 elif echo "$ld_ver" | grep GNU > /dev/null; then
2703 if test 0"$ld_date" -lt 20050308; then
2704 if test -n "$ld_date"; then
2705 # If there was date string, but was earlier than 2005-03-08, fail
2707 elif test "$ld_vers_major" -lt 2; then
2709 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2716 *-*-solaris2.1[1-9]*)
2718 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2719 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2722 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2723 # least ld version 1.2267.
2724 if test "$ld_vers_major" -gt 1; then
2726 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2728 elif test "$ld_vers_minor" -ge 2267; then
2733 # Assume linkers other than GNU ld don't support COMDAT group.
2739 # Allow overriding the automatic COMDAT group tests above.
2740 AC_ARG_ENABLE(comdat,
2741 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2742 [comdat_group="$enable_comdat"])
2743 if test $comdat_group = no; then
2744 gcc_cv_as_comdat_group=no
2745 gcc_cv_as_comdat_group_percent=no
2746 gcc_cv_as_comdat_group_group=no
2748 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2749 [`if test $gcc_cv_as_comdat_group = yes \
2750 || test $gcc_cv_as_comdat_group_percent = yes \
2751 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2752 [Define 0/1 if your assembler and linker support COMDAT groups.])
2754 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2755 gcc_cv_as_discriminator,
2759 .loc 1 1 0 discriminator 1],,
2760 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2761 [Define if your assembler supports the .loc discriminator sub-directive.])])
2763 # Thread-local storage - the check is heavily parameterized.
2772 .section ".tdata","awT",@progbits
2775 ldq $27,__tls_get_addr($29) !literal!1
2776 lda $16,foo($29) !tlsgd!1
2777 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2778 ldq $27,__tls_get_addr($29) !literal!2
2779 lda $16,foo($29) !tlsldm!2
2780 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2781 ldq $1,foo($29) !gotdtprel
2782 ldah $2,foo($29) !dtprelhi
2783 lda $3,foo($2) !dtprello
2784 lda $4,foo($29) !dtprel
2785 ldq $1,foo($29) !gottprel
2786 ldah $2,foo($29) !tprelhi
2787 lda $3,foo($2) !tprello
2788 lda $4,foo($29) !tprel'
2791 tls_as_opt=--fatal-warnings
2793 cris-*-*|crisv32-*-*)
2795 .section ".tdata","awT",@progbits
2802 tls_as_opt=--fatal-warnings
2806 .section ".tdata","awT",@progbits
2818 .section ".tdata","awT",@progbits
2822 addil LT%foo-$tls_gdidx$,gp
2823 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2826 addil LT%foo-$tls_ldidx$,gp
2828 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2829 addil LR%foo-$tls_dtpoff$,%ret0
2830 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2832 addil LT%foo-$tls_ieoff$,gp
2833 ldw RT%foo-$tls_ieoff$(%r1),%t2
2836 addil LR%foo-$tls_leoff$,%t1
2837 ldo RR%foo-$tls_leoff$(%r1),%t2'
2840 tls_as_opt=--fatal-warnings
2844 .section ".tdata","awT",%progbits
2855 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2857 i[34567]86-*-solaris2.*)
2859 tga_func=___tls_get_addr
2861 x86_64-*-solaris2.1[0-9]*)
2863 tga_func=__tls_get_addr
2869 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2871 .section .tdata,"awt",@progbits'
2875 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2876 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2880 .section ".tdata","awT",@progbits'
2883 tls_as_opt="--fatal-warnings"
2885 conftest_s="$conftest_s
2889 leal foo@tlsgd(,%ebx,1), %eax
2890 leal foo@tlsldm(%ebx), %eax
2891 leal foo@dtpoff(%eax), %edx
2892 movl foo@gottpoff(%ebx), %eax
2893 subl foo@gottpoff(%ebx), %eax
2894 addl foo@gotntpoff(%ebx), %eax
2895 movl foo@indntpoff, %eax
2896 movl \$foo@tpoff, %eax
2897 subl \$foo@tpoff, %eax
2898 leal foo@ntpoff(%ecx), %eax"
2902 .section ".tdata","awT",@progbits
2906 leaq foo@TLSGD(%rip), %rdi
2907 leaq foo@TLSLD(%rip), %rdi
2908 leaq foo@DTPOFF(%rax), %rdx
2909 movq foo@GOTTPOFF(%rip), %rax
2910 movq $foo@TPOFF, %rax'
2913 tls_as_opt=--fatal-warnings
2917 .section ".tdata","awT",@progbits
2920 addl r16 = @ltoff(@dtpmod(foo#)), gp
2921 addl r17 = @ltoff(@dtprel(foo#)), gp
2922 addl r18 = @ltoff(@tprel(foo#)), gp
2923 addl r19 = @dtprel(foo#), gp
2924 adds r21 = @dtprel(foo#), r13
2925 movl r23 = @dtprel(foo#)
2926 addl r20 = @tprel(foo#), gp
2927 adds r22 = @tprel(foo#), r13
2928 movl r24 = @tprel(foo#)'
2931 tls_as_opt=--fatal-warnings
2935 .section .tdata,"awT",@progbits
2939 addiu $4, $28, %tlsgd(x)
2940 addiu $4, $28, %tlsldm(x)
2941 lui $4, %dtprel_hi(x)
2942 addiu $4, $4, %dtprel_lo(x)
2943 lw $4, %gottprel(x)($28)
2944 lui $4, %tprel_hi(x)
2945 addiu $4, $4, %tprel_lo(x)'
2948 tls_as_opt='-32 --fatal-warnings'
2952 .section .tdata,"awT",@progbits
2957 move.l x@TLSGD(%a5),%a0
2958 move.l x@TLSLDM(%a5),%a0
2959 move.l x@TLSLDO(%a5),%a0
2960 move.l x@TLSIE(%a5),%a0
2961 move.l x@TLSLE(%a5),%a0'
2964 tls_as_opt='--fatal-warnings'
2968 .section ".tdata","awT",@progbits
2976 addi 3,31,ld0@got@tlsgd
2978 addi 3,31,x1@got@tlsld
2981 addis 9,3,x2@dtprel@ha
2982 addi 9,9,x2@dtprel@l
2983 lwz 9,x3@got@tprel(31)
2986 addis 9,2,x2@tprel@ha
2987 addi 9,9,x2@tprel@l'
2990 tls_as_opt="-a32 --fatal-warnings"
2994 .section ".tdata","awT",@progbits
3002 addi 3,2,ld0@got@tlsgd
3008 addi 3,2,x1@got@tlsld
3014 addis 9,3,x2@dtprel@ha
3015 addi 9,9,x2@dtprel@l
3018 ld 9,x3@got@dtprel(2)
3024 tls_as_opt="-a64 --fatal-warnings"
3028 .section ".tdata","awT",@progbits
3037 l %r1,foo@GOTNTPOFF(%r12)
3038 l %r1,0(%r1):tls_load:foo
3039 bas %r14,0(%r1,%r13):tls_gdcall:foo
3040 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3043 tls_as_opt="-m31 --fatal-warnings"
3047 .section ".tdata","awT",@progbits
3055 lg %r1,foo@GOTNTPOFF(%r12)
3056 larl %r1,foo@INDNTPOFF
3057 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3058 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3061 tls_as_opt="-m64 -Aesame --fatal-warnings"
3063 sh-*-* | sh[34]-*-*)
3065 .section ".tdata","awT",@progbits
3075 tls_as_opt=--fatal-warnings
3079 sparc*-sun-solaris2.*)
3081 tga_func=__tls_get_addr
3087 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3089 .section ".tdata",#alloc,#write,#tls'
3094 .section ".tdata","awT",@progbits'
3097 tls_as_opt="-32 --fatal-warnings"
3099 conftest_s="$conftest_s
3102 sethi %tgd_hi22(foo), %o0
3103 add %o0, %tgd_lo10(foo), %o1
3104 add %l7, %o1, %o0, %tgd_add(foo)
3105 call __tls_get_addr, %tgd_call(foo)
3106 sethi %tldm_hi22(foo), %l1
3107 add %l1, %tldm_lo10(foo), %l2
3108 add %l7, %l2, %o0, %tldm_add(foo)
3109 call __tls_get_addr, %tldm_call(foo)
3110 sethi %tldo_hix22(foo), %l3
3111 xor %l3, %tldo_lox10(foo), %l4
3112 add %o0, %l4, %l5, %tldo_add(foo)
3113 sethi %tie_hi22(foo), %o3
3114 add %o3, %tie_lo10(foo), %o3
3115 ld [%l7 + %o3], %o2, %tie_ld(foo)
3116 add %g7, %o2, %o4, %tie_add(foo)
3117 sethi %tle_hix22(foo), %l1
3118 xor %l1, %tle_lox10(foo), %o5
3119 ld [%g7 + %o5], %o1"
3123 .section ".tdata","awT",@progbits
3126 movi a8, foo@TLSFUNC
3127 movi a10, foo@TLSARG
3128 callx8.tls a8, foo@TLSCALL'
3135 if test "x$enable_tls" = xno ; then
3136 : # TLS explicitly disabled.
3137 elif test "x$enable_tls" = xyes ; then
3138 set_have_as_tls=yes # TLS explicitly enabled.
3139 elif test -z "$tls_first_major"; then
3140 : # If we don't have a check, assume no support.
3142 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3143 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3144 [set_have_as_tls=yes])
3148 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3149 # with TLS support are in use, native TLS cannot work.
3153 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3154 # gld with TLS support are in use, native TLS cannot work.
3157 # TLS was introduced in the Solaris 9 FCS release and backported to
3158 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3159 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3160 # ld and GCC don't support any longer.
3162 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3164 # Check ld and ld.so.1 TLS support.
3165 if echo "$ld_ver" | grep GNU > /dev/null; then
3166 # Assume all interesting versions of GNU ld have TLS support.
3167 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3171 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3173 min_tls_ld_vers_minor=280
3175 # Solaris 8/SPARC ld has TLS support since version 1.272.
3176 sparc*-*-solaris2.8)
3177 min_tls_ld_vers_minor=272
3179 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3181 min_tls_ld_vers_minor=374
3183 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3184 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3185 min_tls_ld_vers_minor=343
3188 if test "$ld_vers_major" -gt 1 || \
3189 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3195 AC_MSG_RESULT($ld_tls_support)
3198 save_LDFLAGS="$LDFLAGS"
3202 AC_MSG_CHECKING(alternate thread library)
3204 # TLS support was backported to Solaris 8 patches, but only lives in
3205 # the alternate thread library which became the default in Solaris 9.
3206 # We want to always use that, irrespective of TLS support.
3208 # Take multilib subdir into account. There's no spec to handle
3209 # this. The 64 symlink exists since Solaris 8.
3210 lwp_dir=/usr/lib/lwp
3211 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3212 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3219 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3220 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3221 [Define to the linker flags to use for -pthread.])
3222 AC_MSG_RESULT($lwp_dir)
3224 AC_MSG_CHECKING(library containing $tga_func)
3225 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3226 # (32-bit x86) only lived in libthread, so check for that. Keep
3227 # set_have_as_tls if found, disable if not.
3228 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3229 # Clear LIBS if we cannot support TLS.
3230 if test $set_have_as_tls = no; then
3233 # Always define LIB_TLS_SPEC, even without TLS support.
3234 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3235 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3236 AC_MSG_RESULT($LIBS)
3239 LDFLAGS="$save_LDFLAGS"
3242 if test $set_have_as_tls = yes ; then
3243 AC_DEFINE(HAVE_AS_TLS, 1,
3244 [Define if your assembler and linker support thread-local storage.])
3247 # Target-specific assembler checks.
3249 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3250 gcc_cv_ld_static_dynamic=no
3251 gcc_cv_ld_static_option='-Bstatic'
3252 gcc_cv_ld_dynamic_option='-Bdynamic'
3253 if test $in_tree_ld = yes ; then
3254 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3255 gcc_cv_ld_static_dynamic=yes
3257 elif test x$gcc_cv_ld != x; then
3258 # Check if linker supports -Bstatic/-Bdynamic option
3259 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3260 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3261 gcc_cv_ld_static_dynamic=yes
3264 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3266 gcc_cv_ld_static_dynamic=yes
3267 gcc_cv_ld_static_option="-noso"
3268 gcc_cv_ld_dynamic_option="-so_archive"
3270 # HP-UX ld uses -a flags to select between shared and archive.
3272 if test x"$gnu_ld" = xno; then
3273 gcc_cv_ld_static_dynamic=yes
3274 gcc_cv_ld_static_option="-aarchive_shared"
3275 gcc_cv_ld_dynamic_option="-adefault"
3278 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3280 gcc_cv_ld_static_dynamic=yes
3282 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3284 gcc_cv_ld_static_dynamic=yes
3289 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3290 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3291 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3292 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3293 [Define to the linker option to disable use of shared objects.])
3294 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3295 [Define to the linker option to enable use of shared objects.])
3297 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3299 if test x"$demangler_in_ld" = xyes; then
3300 AC_MSG_CHECKING(linker --demangle support)
3301 gcc_cv_ld_demangle=no
3302 if test $in_tree_ld = yes; then
3303 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3304 gcc_cv_ld_demangle=yes
3306 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3307 # Check if the GNU linker supports --demangle option
3308 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3309 gcc_cv_ld_demangle=yes
3312 if test x"$gcc_cv_ld_demangle" = xyes; then
3313 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3314 [Define if your linker supports --demangle option.])
3316 AC_MSG_RESULT($gcc_cv_ld_demangle)
3319 AC_MSG_CHECKING(linker plugin support)
3321 if test -f liblto_plugin.la; then
3322 save_ld_ver="$ld_ver"
3323 save_ld_vers_major="$ld_vers_major"
3324 save_ld_vers_minor="$ld_vers_minor"
3325 save_ld_is_gold="$ld_is_gold"
3329 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3331 # FIXME: ld_is_gold?
3332 ld_vers_major="$gcc_cv_gld_major_version"
3333 ld_vers_minor="$gcc_cv_gld_minor_version"
3335 # Determine plugin linker version.
3336 # FIXME: Partial duplicate from above, generalize.
3338 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3339 if echo "$ld_ver" | grep GNU > /dev/null; then
3340 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3342 ld_vers=`echo $ld_ver | sed -n \
3343 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3345 ld_vers=`echo $ld_ver | sed -n \
3346 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3348 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3349 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3354 # Determine plugin support.
3355 if echo "$ld_ver" | grep GNU > /dev/null; then
3356 # Require GNU ld or gold 2.21+ for plugin support by default.
3357 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3359 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3360 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3365 ld_ver="$save_ld_ver"
3366 ld_vers_major="$save_ld_vers_major"
3367 ld_vers_minor="$save_ld_vers_minor"
3368 ld_is_gold="$save_ld_is_gold"
3370 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3371 [Define to the level of your linker's plugin support.])
3372 AC_MSG_RESULT($gcc_cv_lto_plugin)
3375 # All TARGET_ABI_OSF targets.
3376 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3377 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3378 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3381 extbl $3, $2, $3 !lituse_bytoff!1
3382 ldq $2, a($29) !literal!1
3383 ldq $4, b($29) !literal!2
3384 ldq_u $3, 0($2) !lituse_base!1
3385 ldq $27, f($29) !literal!5
3386 jsr $26, ($27), f !lituse_jsr!5
3387 ldah $29, 0($26) !gpdisp!3
3388 lda $0, c($29) !gprel
3389 ldah $1, d($29) !gprelhigh
3390 lda $1, d($1) !gprellow
3391 lda $29, 0($29) !gpdisp!3],,
3392 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3393 [Define if your assembler supports explicit relocations.])])
3394 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3395 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3398 ldq $27, a($29) !literal!1
3399 jsr $26, ($27), a !lituse_jsrdirect!1],,
3400 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3401 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3405 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3406 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3407 [-no-mul-bug-abort], [.text],,
3408 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3409 [Define if your assembler supports the -no-mul-bug-abort option.])])
3413 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3414 [.register %g2, #scratch],,
3415 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3416 [Define if your assembler supports .register.])])
3418 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3420 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3421 [Define if your assembler supports -relax option.])])
3423 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3424 gcc_cv_as_sparc_gotdata_op,,
3431 sethi %gdop_hix22(foo), %g1
3432 xor %g1, %gdop_lox10(foo), %g1
3433 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3434 [if test x$gcc_cv_ld != x \
3435 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3436 if test x$gcc_cv_objdump != x; then
3437 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3438 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3439 gcc_cv_as_sparc_gotdata_op=no
3441 gcc_cv_as_sparc_gotdata_op=yes
3446 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3447 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3449 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3450 gcc_cv_as_sparc_ua_pcrel,,
3458 .uaword %r_disp32(foo)],
3459 [if test x$gcc_cv_ld != x \
3460 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3461 gcc_cv_as_sparc_ua_pcrel=yes
3464 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3465 [Define if your assembler and linker support unaligned PC relative relocs.])
3467 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3468 gcc_cv_as_sparc_ua_pcrel_hidden,,
3473 .uaword %r_disp32(foo)
3474 .byte 0x32, 0x33, 0x34
3479 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3480 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3481 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3482 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3483 if $gcc_cv_objdump -R conftest 2> /dev/null \
3484 | grep 'DISP32' > /dev/null 2>&1; then
3487 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3491 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3492 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3493 ]) # unaligned pcrel relocs
3495 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3496 gcc_cv_as_sparc_offsetable_lo10,,
3499 or %g1, %lo(ab) + 12, %g1
3500 or %g1, %lo(ab + 12), %g1],
3501 [if test x$gcc_cv_objdump != x \
3502 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3503 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3504 gcc_cv_as_sparc_offsetable_lo10=yes
3506 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3507 [Define if your assembler supports offsetable %lo().])])
3509 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3510 gcc_cv_as_sparc_fmaf,,
3513 .register %g2, #scratch
3514 .register %g3, #scratch
3516 fmaddd %f0, %f2, %f4, %f6
3517 addxccc %g1, %g2, %g3
3518 fsrl32 %f2, %f4, %f8
3519 fnaddd %f10, %f12, %f14],,
3520 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3521 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3525 i[34567]86-*-* | x86_64-*-*)
3529 # Full C++ conformance when using a shared libstdc++-v3 requires some
3530 # support from the Cygwin DLL, which in more recent versions exports
3531 # wrappers to aid in interposing and redirecting operators new, delete,
3532 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3533 # are configuring for a version of Cygwin that exports the wrappers.
3534 if test x$host = x$target; then
3535 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3537 # Can't check presence of libc functions during cross-compile, so
3538 # we just have to assume we're building for an up-to-date target.
3539 gcc_ac_cygwin_dll_wrappers=yes
3541 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3542 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3543 [Define if you want to generate code by default that assumes that the
3544 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3547 cygwin* | pe | mingw32*)
3548 # Recent binutils allows the three-operand form of ".comm" on PE. This
3549 # definition is used unconditionally to initialise the default state of
3550 # the target option variable that governs usage of the feature.
3551 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3552 [2,19,52],,[.comm foo,1,32])
3553 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3554 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3555 [Define if your assembler supports specifying the alignment
3556 of objects allocated using the GAS .comm command.])
3557 # Used for DWARF 2 in PE
3558 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3559 gcc_cv_as_ix86_pe_secrel32,
3565 [if test x$gcc_cv_ld != x \
3566 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3567 gcc_cv_as_ix86_pe_secrel32=yes
3570 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3571 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3572 # Test if the assembler supports the extended form of the .section
3573 # directive that specifies section alignment. LTO support uses this,
3574 # but normally only after installation, so we warn but don't fail the
3575 # configure if LTO is enabled but the assembler does not support it.
3576 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3577 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3578 if test x$gcc_cv_as_section_has_align != xyes; then
3579 case ",$enable_languages," in
3581 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3585 # Test if the assembler supports the section flag 'e' for specifying
3586 # an excluded section.
3587 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3591 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3592 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3593 [Define if your assembler supports specifying the section flag e.])
3597 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3598 gcc_cv_as_ix86_filds,,,
3599 [filds mem; fists mem],,
3600 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3601 [Define if your assembler uses filds and fists mnemonics.])])
3603 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3604 gcc_cv_as_ix86_fildq,,,
3605 [fildq mem; fistpq mem],,
3606 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3607 [Define if your assembler uses fildq and fistq mnemonics.])])
3609 gcc_GAS_CHECK_FEATURE([cmov syntax],
3610 gcc_cv_as_ix86_cmov_sun_syntax,,,
3611 [cmovl.l %edx, %eax],,
3612 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3613 [Define if your assembler supports the Sun syntax for cmov.])])
3615 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3616 gcc_cv_as_ix86_ffreep,,,
3618 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3619 [Define if your assembler supports the ffreep mnemonic.])])
3621 gcc_GAS_CHECK_FEATURE([.quad directive],
3622 gcc_cv_as_ix86_quad,,,
3624 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3625 [Define if your assembler supports the .quad directive.])])
3627 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3628 gcc_cv_as_ix86_sahf,,,
3631 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3632 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3634 gcc_GAS_CHECK_FEATURE([swap suffix],
3635 gcc_cv_as_ix86_swap,,,
3636 [movl.s %esp, %ebp],,
3637 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3638 [Define if your assembler supports the swap suffix.])])
3640 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3641 gcc_cv_as_ix86_diff_sect_delta,,,
3649 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3650 [Define if your assembler supports the subtraction of symbols in different sections.])])
3652 # These two are used unconditionally by i386.[ch]; it is to be defined
3653 # to 1 if the feature is present, 0 otherwise.
3654 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3655 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3661 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3662 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3663 [Define true if the assembler supports '.long foo@GOTOFF'.])
3665 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3666 gcc_cv_as_ix86_rep_lock_prefix,,,
3668 lock addl %edi, (%eax,%esi)
3669 lock orl $0, (%esp)],,
3670 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3671 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3673 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3674 gcc_cv_as_ix86_tlsgdplt,,,
3675 [call tls_gd@tlsgdplt],,
3676 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3677 [Define if your assembler supports @tlsgdplt.])])
3679 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3680 gcc_cv_as_ix86_tlsldmplt,,,
3681 [call tls_ld@tlsldmplt],,
3682 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3683 [Define if your assembler supports @tlsldmplt.])])
3688 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3689 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3691 addl r15 = @ltoffx(x#), gp
3693 ld8.mov r16 = [[r15]], x#],,
3694 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3695 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3701 *-*-aix*) conftest_s=' .machine "pwr5"
3705 gcc_GAS_CHECK_FEATURE([.machine directive support],
3706 gcc_cv_as_machine_directive,,,
3707 [ .machine ppc7400])
3708 if test x$gcc_cv_as_machine_directive != xyes; then
3709 echo "*** This target requires an assembler supporting \".machine\"" >&2
3710 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3711 test x$build = x$target && exit 1
3715 *) conftest_s=' .machine power4
3720 gcc_GAS_CHECK_FEATURE([mfcr field support],
3721 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3723 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3724 [Define if your assembler supports mfcr field.])])
3727 *-*-aix*) conftest_s=' .machine "pwr5"
3730 *) conftest_s=' .machine power5
3735 gcc_GAS_CHECK_FEATURE([popcntb support],
3736 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3738 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3739 [Define if your assembler supports popcntb field.])])
3742 *-*-aix*) conftest_s=' .machine "pwr5x"
3745 *) conftest_s=' .machine power5
3750 gcc_GAS_CHECK_FEATURE([fp round support],
3751 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3753 [AC_DEFINE(HAVE_AS_FPRND, 1,
3754 [Define if your assembler supports fprnd.])])
3757 *-*-aix*) conftest_s=' .machine "pwr6"
3760 *) conftest_s=' .machine power6
3765 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3766 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3768 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3769 [Define if your assembler supports mffgpr and mftgpr.])])
3772 *-*-aix*) conftest_s=' .csect .text[[PR]]
3774 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3778 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3779 *) conftest_s=' .text
3781 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3784 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3785 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3787 [AC_DEFINE(HAVE_AS_REL16, 1,
3788 [Define if your assembler supports R_PPC_REL16 relocs.])])
3791 *-*-aix*) conftest_s=' .machine "pwr6"
3794 *) conftest_s=' .machine power6
3799 gcc_GAS_CHECK_FEATURE([compare bytes support],
3800 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3802 [AC_DEFINE(HAVE_AS_CMPB, 1,
3803 [Define if your assembler supports cmpb.])])
3806 *-*-aix*) conftest_s=' .machine "pwr6"
3809 *) conftest_s=' .machine power6
3814 gcc_GAS_CHECK_FEATURE([decimal float support],
3815 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3817 [AC_DEFINE(HAVE_AS_DFP, 1,
3818 [Define if your assembler supports DFP instructions.])])
3821 *-*-aix*) conftest_s=' .machine "pwr7"
3824 *) conftest_s=' .machine power7
3829 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3830 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3832 [AC_DEFINE(HAVE_AS_VSX, 1,
3833 [Define if your assembler supports VSX instructions.])])
3836 *-*-aix*) conftest_s=' .machine "pwr7"
3839 *) conftest_s=' .machine power7
3844 gcc_GAS_CHECK_FEATURE([popcntd support],
3845 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3847 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3848 [Define if your assembler supports POPCNTD instructions.])])
3851 *-*-aix*) conftest_s=' .csect .text[[PR]]
3853 *) conftest_s=' .text
3857 gcc_GAS_CHECK_FEATURE([lwsync support],
3858 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3860 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3861 [Define if your assembler supports LWSYNC instructions.])])
3864 *-*-aix*) conftest_s=' .machine "476"
3867 *) conftest_s=' .machine "476"
3872 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3873 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3875 [AC_DEFINE(HAVE_AS_DCI, 1,
3876 [Define if your assembler supports the DCI/ICI instructions.])])
3878 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3879 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3880 [.gnu_attribute 4,1],,
3881 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3882 [Define if your assembler supports .gnu_attribute.])])
3884 gcc_GAS_CHECK_FEATURE([tls marker support],
3885 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3886 [ bl __tls_get_addr(x@tlsgd)],,
3887 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3888 [Define if your assembler supports arg info for __tls_get_addr.])])
3892 gcc_GAS_CHECK_FEATURE([.ref support],
3893 gcc_cv_as_aix_ref, [2.21.0],,
3894 [ .csect stuff[[rw]]
3900 [AC_DEFINE(HAVE_AS_REF, 1,
3901 [Define if your assembler supports .ref])])
3907 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3908 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3909 [ lw $4,%gp_rel(foo)($4)],,
3910 [if test x$target_cpu_default = x
3911 then target_cpu_default=MASK_EXPLICIT_RELOCS
3912 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3914 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3915 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3916 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3917 [Define if the assembler understands -mno-shared.])])
3919 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3920 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3921 [.gnu_attribute 4,1],,
3922 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3923 [Define if your assembler supports .gnu_attribute.])])
3925 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3926 gcc_cv_as_mips_dtprelword, [2,18,0],,
3927 [.section .tdata,"awT",@progbits
3931 .dtprelword x+0x8000],,
3932 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3933 [Define if your assembler supports .dtprelword.])])
3935 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3936 gcc_cv_as_mips_dspr1_mult,,,
3946 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3947 [Define if your assembler supports DSPR1 mult.])])
3949 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3950 gcc_cv_as_ld_jalr_reloc=no
3951 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3952 if test $in_tree_ld = yes ; then
3953 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3954 && test $in_tree_ld_is_elf = yes; then
3955 gcc_cv_as_ld_jalr_reloc=yes
3957 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3958 echo ' .ent x' > conftest.s
3959 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3960 echo ' ld $25,%call16(y)($28)' >> conftest.s
3961 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3962 echo '1: jalr $25' >> conftest.s
3963 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3964 echo '1: jalr $25' >> conftest.s
3965 echo ' .end x' >> conftest.s
3966 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3967 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3968 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3969 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3970 gcc_cv_as_ld_jalr_reloc=yes
3976 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3977 if test x$target_cpu_default = x; then
3978 target_cpu_default=MASK_RELAX_PIC_CALLS
3980 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3983 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3985 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3986 [gcc_cv_ld_mips_personality_relaxation],
3987 [gcc_cv_ld_mips_personality_relaxation=no
3988 if test $in_tree_ld = yes ; then
3989 if test "$gcc_cv_gld_major_version" -eq 2 \
3990 -a "$gcc_cv_gld_minor_version" -ge 21 \
3991 -o "$gcc_cv_gld_major_version" -gt 2; then
3992 gcc_cv_ld_mips_personality_relaxation=yes
3994 elif test x$gcc_cv_as != x \
3995 -a x$gcc_cv_ld != x \
3996 -a x$gcc_cv_readelf != x ; then
3997 cat > conftest.s <<EOF
3999 .cfi_personality 0x80,indirect_ptr
4006 .section .data,"aw",@progbits
4010 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4011 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4012 if $gcc_cv_readelf -d conftest 2>&1 \
4013 | grep TEXTREL > /dev/null 2>&1; then
4015 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4016 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4019 gcc_cv_ld_mips_personality_relaxation=yes
4023 rm -f conftest.s conftest.o conftest])
4024 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4025 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4026 [Define if your linker can relax absolute .eh_frame personality
4027 pointers into PC-relative form.])
4032 # Mips and HP-UX need the GNU assembler.
4033 # Linux on IA64 might be able to use the Intel assembler.
4036 mips*-*-* | *-*-hpux* )
4037 if test x$gas_flag = xyes \
4038 || test x"$host" != x"$build" \
4039 || test ! -x "$gcc_cv_as" \
4040 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4043 echo "*** This configuration requires the GNU assembler" >&2
4049 # ??? Not all targets support dwarf2 debug_line, even within a version
4050 # of gas. Moreover, we need to emit a valid instruction to trigger any
4051 # info to the output file. So, as supported targets are added to gas 2.11,
4052 # add some instruction here to (also) show we expect this might work.
4053 # ??? Once 2.11 is released, probably need to add first known working
4054 # version to the per-target configury.
4056 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4057 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
4067 if test x"$insn" != x; then
4069 .file 1 \"conftest.s\"
4072 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4073 gcc_cv_as_dwarf2_debug_line,
4074 [elf,2,11,0],, [$conftest_s],
4075 [if test x$gcc_cv_objdump != x \
4076 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4077 | grep debug_line > /dev/null 2>&1; then
4078 gcc_cv_as_dwarf2_debug_line=yes
4081 # The .debug_line file table must be in the exact order that
4082 # we specified the files, since these indices are also used
4083 # by DW_AT_decl_file. Approximate this test by testing if
4084 # the assembler bitches if the same index is assigned twice.
4085 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4086 gcc_cv_as_dwarf2_file_buggy,,,
4090 if test $gcc_cv_as_dwarf2_debug_line = yes \
4091 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4092 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4093 [Define if your assembler supports dwarf2 .file/.loc directives,
4094 and preserves file table indices exactly as given.])
4097 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4098 gcc_cv_as_gdwarf2_flag,
4099 [elf,2,11,0], [--gdwarf2], [$insn],,
4100 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4101 [Define if your assembler supports the --gdwarf2 option.])])
4103 gcc_GAS_CHECK_FEATURE([--gstabs option],
4104 gcc_cv_as_gstabs_flag,
4105 [elf,2,11,0], [--gstabs], [$insn],
4106 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4107 # and warns about it, but still exits successfully. So check for
4109 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4111 else gcc_cv_as_gstabs_flag=yes
4113 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4114 [Define if your assembler supports the --gstabs option.])])
4116 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4117 gcc_cv_as_debug_prefix_map_flag,
4118 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4119 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4120 [Define if your assembler supports the --debug-prefix-map option.])])
4123 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4126 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4127 [Define if your assembler supports .lcomm with an alignment field.])])
4129 AC_ARG_ENABLE(gnu-unique-object,
4130 [AS_HELP_STRING([--enable-gnu-unique-object],
4131 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4132 [case $enable_gnu_unique_object in
4134 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4135 Valid choices are 'yes' and 'no'.]) ;;
4137 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4139 [.type foo, @gnu_unique_object],,
4140 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4141 [[if test x$host = x$build -a x$host = x$target &&
4142 ldd --version 2>/dev/null &&
4143 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4144 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4145 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4146 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4147 if test "$glibcnum" -ge 2011 ; then
4148 enable_gnu_unique_object=yes
4151 if test x$enable_gnu_unique_object = xyes; then
4152 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4153 [Define if your assembler supports @gnu_unique_object.])
4156 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4157 [gcc_cv_as_line_zero],
4158 [gcc_cv_as_line_zero=no
4159 if test $in_tree_gas = yes; then
4160 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4161 elif test "x$gcc_cv_as" != x; then
4162 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4163 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4164 test "x`cat conftest.out`" = x
4166 gcc_cv_as_line_zero=yes
4168 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4169 cat conftest.s >&AS_MESSAGE_LOG_FD
4170 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4171 cat conftest.out >&AS_MESSAGE_LOG_FD
4173 rm -f conftest.o conftest.s conftest.out
4175 if test "x$gcc_cv_as_line_zero" = xyes; then
4176 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4177 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4180 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4181 gcc_cv_ld_eh_frame_hdr=no
4182 if test $in_tree_ld = yes ; then
4183 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4184 && test $in_tree_ld_is_elf = yes; then
4185 gcc_cv_ld_eh_frame_hdr=yes
4187 elif test x$gcc_cv_ld != x; then
4188 if echo "$ld_ver" | grep GNU > /dev/null; then
4189 # Check if linker supports --eh-frame-hdr option
4190 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4191 gcc_cv_ld_eh_frame_hdr=yes
4196 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4197 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4198 gcc_cv_ld_eh_frame_hdr=yes
4204 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4205 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4206 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4207 [Define if your linker supports .eh_frame_hdr.])
4209 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4211 AC_MSG_CHECKING(linker position independent executable support)
4213 if test $in_tree_ld = yes ; then
4214 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4215 && test $in_tree_ld_is_elf = yes; then
4218 elif test x$gcc_cv_ld != x; then
4219 # Check if linker supports -pie option
4220 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4224 if test x"$gcc_cv_ld_pie" = xyes; then
4225 AC_DEFINE(HAVE_LD_PIE, 1,
4226 [Define if your linker supports -pie option.])
4228 AC_MSG_RESULT($gcc_cv_ld_pie)
4230 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4231 gcc_cv_ld_eh_gc_sections=no
4232 if test $in_tree_ld = yes ; then
4233 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4234 && test $in_tree_ld_is_elf = yes; then
4235 gcc_cv_ld_eh_gc_sections=yes
4237 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4238 cat > conftest.s <<EOF
4241 .type _start, @function
4244 .size _start, .-_start
4245 .section .text.foo,"ax",@progbits
4246 .type foo, @function
4250 .section .gcc_except_table.foo,"a",@progbits
4253 .section .eh_frame,"a",@progbits
4256 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4257 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4258 | grep "gc-sections option ignored" > /dev/null; then
4259 gcc_cv_ld_eh_gc_sections=no
4260 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4261 | grep gcc_except_table > /dev/null; then
4262 gcc_cv_ld_eh_gc_sections=yes
4263 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4264 if test x$gcc_cv_as_comdat_group != xyes; then
4265 gcc_cv_ld_eh_gc_sections=no
4266 cat > conftest.s <<EOF
4269 .type _start, @function
4272 .size _start, .-_start
4273 .section .gnu.linkonce.t.foo,"ax",@progbits
4274 .type foo, @function
4278 .section .gcc_except_table.foo,"a",@progbits
4281 .section .eh_frame,"a",@progbits
4284 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4285 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4286 | grep "gc-sections option ignored" > /dev/null; then
4287 gcc_cv_ld_eh_gc_sections=no
4288 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4289 | grep gcc_except_table > /dev/null; then
4290 gcc_cv_ld_eh_gc_sections=yes
4296 rm -f conftest.s conftest.o conftest
4300 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4301 gcc_cv_ld_eh_gc_sections=no
4304 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4305 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4306 [Define if your linker supports garbage collection of
4307 sections in presence of EH frames.])
4309 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4311 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4312 gcc_cv_ld_eh_gc_sections_bug=no
4313 if test $in_tree_ld = yes ; then
4314 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4315 && test $in_tree_ld_is_elf = yes; then
4316 gcc_cv_ld_eh_gc_sections_bug=yes
4318 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x -a x$gcc_cv_as_comdat_group = xyes; then
4319 gcc_cv_ld_eh_gc_sections_bug=yes
4320 cat > conftest.s <<EOF
4323 .type _start, @function
4326 .size _start, .-_start
4327 .section .text.startup.foo,"ax",@progbits
4328 .type foo, @function
4332 .section .gcc_except_table.foo,"a",@progbits
4335 .section .eh_frame,"a",@progbits
4338 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4339 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4340 | grep "gc-sections option ignored" > /dev/null; then
4342 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4343 | grep gcc_except_table > /dev/null; then
4344 gcc_cv_ld_eh_gc_sections_bug=no
4347 rm -f conftest.s conftest.o conftest
4349 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4350 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4351 [Define if your linker has buggy garbage collection of
4352 sections support when .text.startup.foo like sections are used.])
4354 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4360 AC_CACHE_CHECK(linker --as-needed support,
4361 gcc_cv_ld_as_needed,
4362 [gcc_cv_ld_as_needed=no
4363 if test $in_tree_ld = yes ; then
4364 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4365 && test $in_tree_ld_is_elf = yes; then
4366 gcc_cv_ld_as_needed=yes
4368 elif test x$gcc_cv_ld != x; then
4369 # Check if linker supports --as-needed and --no-as-needed options
4370 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4371 gcc_cv_ld_as_needed=yes
4375 if test x"$gcc_cv_ld_as_needed" = xyes; then
4376 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4377 [Define if your linker supports --as-needed and --no-as-needed options.])
4380 case "$target:$tm_file" in
4381 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4382 AC_CACHE_CHECK(linker support for omitting dot symbols,
4383 gcc_cv_ld_no_dot_syms,
4384 [gcc_cv_ld_no_dot_syms=no
4385 if test $in_tree_ld = yes ; then
4386 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4387 gcc_cv_ld_no_dot_syms=yes
4389 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4390 cat > conftest1.s <<EOF
4394 cat > conftest2.s <<EOF
4395 .section ".opd","aw"
4400 .quad .LEfoo,.TOC.@tocbase,0
4406 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4407 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4408 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4409 gcc_cv_ld_no_dot_syms=yes
4411 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4414 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4415 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4416 [Define if your PowerPC64 linker only needs function descriptor syms.])
4419 AC_CACHE_CHECK(linker large toc support,
4420 gcc_cv_ld_large_toc,
4421 [gcc_cv_ld_large_toc=no
4422 if test $in_tree_ld = yes ; then
4423 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4424 gcc_cv_ld_large_toc=yes
4426 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4427 cat > conftest.s <<EOF
4428 .section ".tbss","awT",@nobits
4434 addis 9,13,ie0@got@tprel@ha
4435 ld 9,ie0@got@tprel@l(9)
4437 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4438 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4439 gcc_cv_ld_large_toc=yes
4441 rm -f conftest conftest.o conftest.s
4444 if test x"$gcc_cv_ld_large_toc" = xyes; then
4445 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4446 [Define if your PowerPC64 linker supports a large TOC.])
4451 AC_CACHE_CHECK(linker --build-id support,
4453 [gcc_cv_ld_buildid=no
4454 if test $in_tree_ld = yes ; then
4455 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4456 "$gcc_cv_gld_minor_version" -ge 18 -o \
4457 "$gcc_cv_gld_major_version" -gt 2 \
4458 && test $in_tree_ld_is_elf = yes; then
4459 gcc_cv_ld_buildid=yes
4461 elif test x$gcc_cv_ld != x; then
4462 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4463 gcc_cv_ld_buildid=yes
4466 if test x"$gcc_cv_ld_buildid" = xyes; then
4467 AC_DEFINE(HAVE_LD_BUILDID, 1,
4468 [Define if your linker supports --build-id.])
4471 AC_ARG_ENABLE(linker-build-id,
4472 [AS_HELP_STRING([--enable-linker-build-id],
4473 [compiler will always pass --build-id to linker])],
4475 enable_linker_build_id=no)
4477 if test x"$enable_linker_build_id" = xyes; then
4478 if test x"$gcc_cv_ld_buildid" = xyes; then
4479 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4480 [Define if gcc should always pass --build-id to linker.])
4482 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4486 # In binutils 2.21, GNU ld gained support for new emulations fully
4487 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4488 AC_CACHE_CHECK(linker *_sol2 emulation support,
4489 gcc_cv_ld_sol2_emulation,
4490 [gcc_cv_ld_sol2_emulation=no
4491 if test $in_tree_ld = yes ; then
4492 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4493 "$gcc_cv_gld_minor_version" -ge 21 -o \
4494 "$gcc_cv_gld_major_version" -gt 2 \
4495 && test $in_tree_ld_is_elf = yes; then
4496 gcc_cv_ld_sol2_emulation=yes
4498 elif test x$gcc_cv_ld != x; then
4499 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4500 grep _sol2 > /dev/null; then
4501 gcc_cv_ld_sol2_emulation=yes
4504 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4505 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4506 [Define if your linker supports the *_sol2 emulations.])
4509 AC_CACHE_CHECK(linker --sysroot support,
4511 [gcc_cv_ld_sysroot=no
4512 if test $in_tree_ld = yes ; then
4513 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4514 gcc_cv_ld_sysroot=yes
4516 elif test x$gcc_cv_ld != x; then
4517 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4518 gcc_cv_ld_sysroot=yes
4521 if test x"$gcc_cv_ld_sysroot" = xyes; then
4522 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4523 [Define if your linker supports --sysroot.])
4526 if test x$with_sysroot = x && test x$host = x$target \
4527 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4528 && test "$prefix" != "NONE"; then
4529 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4530 [Define to PREFIX/include if cpp should also search that directory.])
4533 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4534 if test "x$with_headers" != x; then
4535 target_header_dir=$with_headers
4536 elif test "x$with_sysroot" = x; then
4537 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4538 elif test "x$with_build_sysroot" != "x"; then
4539 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4540 elif test "x$with_sysroot" = xyes; then
4541 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4543 target_header_dir="${with_sysroot}${native_system_header_dir}"
4546 target_header_dir=${native_system_header_dir}
4549 # Test for stack protector support in target C library.
4550 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4551 gcc_cv_libc_provides_ssp,
4552 [gcc_cv_libc_provides_ssp=no
4554 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4555 [# glibc 2.4 and later provides __stack_chk_fail and
4556 # either __stack_chk_guard, or TLS access to stack guard canary.
4557 if test -f $target_header_dir/features.h \
4558 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4559 $target_header_dir/features.h > /dev/null; then
4560 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4561 $target_header_dir/features.h > /dev/null; then
4562 gcc_cv_libc_provides_ssp=yes
4563 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4564 $target_header_dir/features.h > /dev/null \
4565 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4566 $target_header_dir/features.h > /dev/null; then
4567 gcc_cv_libc_provides_ssp=yes
4568 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4569 $target_header_dir/features.h > /dev/null && \
4570 test -f $target_header_dir/bits/uClibc_config.h && \
4571 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4572 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4573 gcc_cv_libc_provides_ssp=yes
4578 # Avoid complicated tests (see
4579 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4580 # simply assert that glibc does provide this, which is true for all
4581 # realistically usable GNU/Hurd configurations.
4582 gcc_cv_libc_provides_ssp=yes;;
4583 *-*-darwin* | *-*-freebsd*)
4584 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4585 [echo "no __stack_chk_fail on this target"])
4587 *) gcc_cv_libc_provides_ssp=no ;;
4590 if test x$gcc_cv_libc_provides_ssp = xyes; then
4591 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4592 [Define if your target C library provides stack protector support])
4595 # Test for <sys/sdt.h> on the target.
4596 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4597 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4599 if test -f $target_header_dir/sys/sdt.h; then
4601 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4602 [Define if your target C library provides sys/sdt.h])
4604 AC_MSG_RESULT($have_sys_sdt_h)
4606 # Check if TFmode long double should be used by default or not.
4607 # Some glibc targets used DFmode long double, but with glibc 2.4
4608 # and later they can use TFmode.
4610 powerpc*-*-linux* | \
4614 AC_ARG_WITH(long-double-128,
4615 [AS_HELP_STRING([--with-long-double-128],
4616 [use 128-bit long double by default])],
4617 gcc_cv_target_ldbl128="$with_long_double_128",
4618 [[gcc_cv_target_ldbl128=no
4619 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4620 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4621 && gcc_cv_target_ldbl128=yes
4625 if test x$gcc_cv_target_ldbl128 = xyes; then
4626 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4627 [Define if TFmode long double should be the default])
4630 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4631 gcc_cv_target_dl_iterate_phdr=unknown
4634 # <link.h> needs both a dl_iterate_phdr declaration and support for
4635 # compilation with largefile support.
4636 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4637 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4638 gcc_cv_target_dl_iterate_phdr=yes
4640 gcc_cv_target_dl_iterate_phdr=no
4644 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4645 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4646 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4647 [Define if your target C library provides the `dl_iterate_phdr' function.])
4649 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4651 # Find out what GC implementation we want, or may, use.
4653 [AS_HELP_STRING([--with-gc={page,zone}],
4654 [choose the garbage collection mechanism to use
4655 with the compiler])],
4662 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4665 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4670 echo "Using $GGC for garbage collection."
4672 # Libraries to use on the host. This will normally be set by the top
4673 # level Makefile. Here we simply capture the value for our Makefile.
4674 if test -z "${HOST_LIBS+set}"; then
4679 # Use the system's zlib library.
4681 zlibinc="-I\$(srcdir)/../zlib"
4682 AC_ARG_WITH(system-zlib,
4683 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4690 dnl Very limited version of automake's enable-maintainer-mode
4692 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4693 dnl maintainer-mode is disabled by default
4694 AC_ARG_ENABLE(maintainer-mode,
4695 [AS_HELP_STRING([--enable-maintainer-mode],
4696 [enable make rules and dependencies not useful
4697 (and sometimes confusing) to the casual installer])],
4698 maintainer_mode=$enableval,
4701 AC_MSG_RESULT($maintainer_mode)
4703 if test "$maintainer_mode" = "yes"; then
4714 # Make empty files to contain the specs and options for each language.
4715 # Then add #include lines to for a compiler that has specs and/or options.
4721 # These (without "all_") are set in each config-lang.in.
4722 # `language' must be a single word so is spelled singularly.
4725 all_outputs='Makefile'
4726 # List of language makefile fragments.
4728 # Additional files for gengtype
4729 all_gtfiles="$target_gtfiles"
4731 # These are the languages that are set in --enable-languages,
4732 # and are available in the GCC tree.
4733 all_selected_languages=
4735 # Add the language fragments.
4736 # Languages are added via two mechanisms. Some information must be
4737 # recorded in makefile variables, these are defined in config-lang.in.
4738 # We accumulate them and plug them into the main Makefile.
4739 # The other mechanism is a set of hooks for each of the main targets
4740 # like `clean', `install', etc.
4742 language_hooks="Make-hooks"
4744 for lang in ${srcdir}/*/config-lang.in
4747 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4749 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4750 if test "x$lang_alias" = x
4752 echo "$lang doesn't set \$language." 1>&2
4755 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4756 subdirs="$subdirs $subdir"
4758 # $gcc_subdir is where the gcc integration files are to be found
4759 # for a language, both for internal compiler purposes (compiler
4760 # sources implementing front-end to GCC tree converters), and for
4761 # build infrastructure purposes (Make-lang.in, etc.)
4763 # This will be <subdir> (relative to $srcdir) if a line like
4764 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4765 # is found in <langdir>/config-lang.in, and will remain <langdir>
4768 # Except for the language alias (fetched above), the regular
4769 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4770 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4771 # only this and the language alias.
4773 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4774 if [ "$gcc_subdir" = "" ]; then
4775 gcc_subdir="$subdir"
4778 case ",$enable_languages," in
4780 all_selected_languages="$all_selected_languages $lang_alias"
4781 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4782 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4794 . ${srcdir}/$gcc_subdir/config-lang.in
4795 if test "x$language" = x
4797 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4802 case ",$enable_languages," in
4805 for i in $subdir_requires; do
4806 test -f "${srcdir}/$i/config-lang.in" && continue
4814 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4815 if test -f $srcdir/$gcc_subdir/lang.opt; then
4816 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4817 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4819 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4820 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4822 all_languages="$all_languages $language"
4823 all_compilers="$all_compilers $compilers"
4824 all_outputs="$all_outputs $outputs"
4825 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4826 case ",$enable_languages," in
4828 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4830 AC_SUBST(enable_lto)
4836 # Pick up gtfiles for c
4838 . ${srcdir}/c-config-lang.in
4839 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4842 for language in $all_selected_languages
4844 check_languages="$check_languages check-$language"
4847 # We link each language in with a set of hooks, reached indirectly via
4848 # lang.${target}. Only do so for selected languages.
4852 target_list="all.cross start.encap rest.encap tags \
4853 install-common install-man install-info install-pdf install-html dvi \
4854 pdf html uninstall info man srcextra srcman srcinfo \
4855 mostlyclean clean distclean maintainer-clean install-plugin"
4857 for t in $target_list
4860 for lang in $all_selected_languages
4864 echo "lang.$t: $x" >> Make-hooks
4868 # Option include files
4871 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4872 option_includes="option-includes.mk"
4873 AC_SUBST_FILE(option_includes)
4881 echo "dir ." > .gdbinit
4882 echo "dir ${srcdir}" >> .gdbinit
4883 if test x$gdb_needs_out_file_path = xyes
4885 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4887 if test "x$subdirs" != x; then
4890 echo "dir ${srcdir}/$s" >> .gdbinit
4893 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4895 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4896 AC_SUBST(gcc_tooldir)
4899 # Find a directory in which to install a shared libgcc.
4901 AC_ARG_ENABLE(version-specific-runtime-libs,
4902 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4903 [specify that runtime libraries should be
4904 installed in a compiler-specific directory])])
4906 AC_ARG_WITH(slibdir,
4907 [AS_HELP_STRING([--with-slibdir=DIR], [shared libraries in DIR @<:@LIBDIR@:>@])],
4908 slibdir="$with_slibdir",
4909 if test "${enable_version_specific_runtime_libs+set}" = set; then
4910 slibdir='$(libsubdir)'
4911 elif test "$host" != "$target"; then
4912 slibdir='$(build_tooldir)/lib'
4918 # Substitute configuration variables
4921 AC_SUBST(all_compilers)
4922 AC_SUBST(all_gtfiles)
4923 AC_SUBST(all_lang_makefrags)
4924 AC_SUBST(all_languages)
4925 AC_SUBST(all_selected_languages)
4926 AC_SUBST(build_exeext)
4927 AC_SUBST(build_install_headers_dir)
4928 AC_SUBST(build_xm_file_list)
4929 AC_SUBST(build_xm_include_list)
4930 AC_SUBST(build_xm_defines)
4931 AC_SUBST(build_file_translate)
4932 AC_SUBST(check_languages)
4933 AC_SUBST(cpp_install_dir)
4934 AC_SUBST(xmake_file)
4935 AC_SUBST(tmake_file)
4936 AC_SUBST(TM_ENDIAN_CONFIG)
4937 AC_SUBST(TM_MULTILIB_CONFIG)
4938 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4939 AC_SUBST(extra_gcc_objs)
4940 AC_SUBST(user_headers_inc_next_pre)
4941 AC_SUBST(user_headers_inc_next_post)
4942 AC_SUBST(extra_headers_list)
4943 AC_SUBST(extra_objs)
4944 AC_SUBST(extra_parts)
4945 AC_SUBST(extra_passes)
4946 AC_SUBST(extra_programs)
4947 AC_SUBST(float_h_file)
4948 AC_SUBST(gcc_config_arguments)
4949 AC_SUBST(gcc_gxx_include_dir)
4950 AC_SUBST(host_exeext)
4951 AC_SUBST(host_xm_file_list)
4952 AC_SUBST(host_xm_include_list)
4953 AC_SUBST(host_xm_defines)
4954 AC_SUBST(out_host_hook_obj)
4956 AC_SUBST(lang_opt_files)
4957 AC_SUBST(lang_specs_files)
4958 AC_SUBST(lang_tree_files)
4959 AC_SUBST(local_prefix)
4961 AC_SUBST(objc_boehm_gc)
4963 AC_SUBST(out_object_file)
4964 AC_SUBST(common_out_file)
4965 AC_SUBST(common_out_object_file)
4966 AC_SUBST(thread_file)
4967 AC_SUBST(tm_file_list)
4968 AC_SUBST(tm_include_list)
4969 AC_SUBST(tm_defines)
4970 AC_SUBST(libgcc_tm_file_list)
4971 AC_SUBST(libgcc_tm_include_list)
4972 AC_SUBST(tm_p_file_list)
4973 AC_SUBST(tm_p_include_list)
4974 AC_SUBST(xm_file_list)
4975 AC_SUBST(xm_include_list)
4976 AC_SUBST(xm_defines)
4977 AC_SUBST(use_gcc_stdint)
4978 AC_SUBST(c_target_objs)
4979 AC_SUBST(cxx_target_objs)
4980 AC_SUBST(fortran_target_objs)
4981 AC_SUBST(target_cpu_default)
4983 AC_SUBST_FILE(language_hooks)
4986 if test x${build} = x${host} ; then
4987 if test x${host} = x${target} ; then
4988 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4990 echo "Links are now set up to build a cross-compiler" 1>&2
4991 echo " from ${host} to ${target}." 1>&2
4994 if test x${host} = x${target} ; then
4995 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4996 echo " for ${target}." 1>&2
4998 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4999 echo " from ${host} to ${target}." 1>&2
5003 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5004 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5006 AC_ARG_VAR(PPLLIBS,[How to link PPL])
5007 AC_ARG_VAR(PPLINC,[How to find PPL include files])
5009 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5010 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5011 if test "x${CLOOGLIBS}" != "x" ; then
5012 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5015 # Check for plugin support
5016 AC_ARG_ENABLE(plugin,
5017 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5018 enable_plugin=$enableval,
5019 enable_plugin=yes; default_plugin=yes)
5025 if test x$build = x$host; then
5026 export_sym_check="nm${exeext} -g"
5027 elif test x$host = x$target; then
5028 export_sym_check="$gcc_cv_nm -g"
5034 if test x$build = x$host; then
5035 export_sym_check="objdump${exeext} -T"
5036 elif test x$host = x$target; then
5037 export_sym_check="$gcc_cv_objdump -T"
5044 if test x"$enable_plugin" = x"yes"; then
5046 AC_MSG_CHECKING([for exported symbols])
5047 if test "x$export_sym_check" != x; then
5048 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5049 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5050 if $export_sym_check conftest | grep foobar > /dev/null; then
5051 : # No need to use a flag
5052 AC_MSG_RESULT([yes])
5054 AC_MSG_RESULT([yes])
5055 AC_MSG_CHECKING([for -rdynamic])
5056 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5057 if $export_sym_check conftest | grep foobar > /dev/null; then
5059 pluginlibs="-rdynamic"
5064 AC_MSG_RESULT([$plugin_rdynamic])
5067 AC_MSG_RESULT([unable to check])
5072 AC_SEARCH_LIBS([dlopen], [dl])
5073 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5074 pluginlibs="$pluginlibs -ldl"
5078 # Check that we can build shared objects with -fPIC -shared
5079 saved_LDFLAGS="$LDFLAGS"
5080 saved_CFLAGS="$CFLAGS"
5083 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5084 CFLAGS="$CFLAGS -fPIC"
5085 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5088 CFLAGS="$CFLAGS -fPIC"
5089 LDFLAGS="$LDFLAGS -fPIC -shared"
5092 AC_MSG_CHECKING([for -fPIC -shared])
5094 [extern int X;],[return X == 0;],
5095 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5096 [AC_MSG_RESULT([no]); have_pic_shared=no])
5097 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5101 LDFLAGS="$saved_LDFLAGS"
5102 CFLAGS="$saved_CFLAGS"
5104 # If plugin support had been requested but not available, fail.
5105 if test x"$enable_plugin" = x"no" ; then
5106 if test x"$default_plugin" != x"yes"; then
5108 Building GCC with plugin support requires a host that supports
5109 -fPIC, -shared, -ldl and -rdynamic.])
5114 AC_SUBST(pluginlibs)
5115 AC_SUBST(enable_plugin)
5116 if test x"$enable_plugin" = x"yes"; then
5117 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5121 AC_ARG_ENABLE(libquadmath-support,
5122 [AS_HELP_STRING([--disable-libquadmath-support],
5123 [disable libquadmath support for Fortran])],
5124 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5125 ENABLE_LIBQUADMATH_SUPPORT=yes)
5126 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5127 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5128 [Define to 1 to enable libquadmath support])
5132 # Specify what hash style to use by default.
5133 AC_ARG_WITH([linker-hash-style],
5134 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5135 [specify the linker hash style])],
5136 [case x"$withval" in
5138 LINKER_HASH_STYLE=sysv
5141 LINKER_HASH_STYLE=gnu
5144 LINKER_HASH_STYLE=both
5147 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5150 [LINKER_HASH_STYLE=''])
5151 if test x"${LINKER_HASH_STYLE}" != x; then
5152 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5153 [The linker hash style])
5156 # Configure the subdirectories
5157 # AC_CONFIG_SUBDIRS($subdirs)
5159 # Create the Makefile
5160 # and configure language subdirectories
5161 AC_CONFIG_FILES($all_outputs)
5163 AC_CONFIG_COMMANDS([default],
5165 case ${CONFIG_HEADERS} in
5166 *auto-host.h:config.in*)
5169 # Make sure all the subdirs exist.
5170 for d in $subdirs doc build common c-family
5172 test -d $d || mkdir $d
5175 [subdirs='$subdirs'])